Exercise 8 Page 323

When adding or subtracting fractions, they should have the same denominator. In this exercise, we have two fractions with different denominators. 7/8 - 2/3 Since 24 is a multiple of both 8 and 3, we can first multiply both the numerator and denominator of 78 by 3 to create a common denominator.

Next, we can multiply both the numerator and denominator of 23 by 8 to create a common denominator.

Now that we have a common denominator, we can proceed to simplifying the expression.

The simplified expression is equal to 524.

When adding or subtracting fractions, they should have the same denominator. In this exercise, we have two fractions with different denominators. 1/3 - 5/6Since 6 is a multiple of 3, we can multiply both the numerator and denominator of 13 by 2 to create a common denominator.

Now that we have a common denominator, we can proceed to simplifying the expression.

The simplified expression is equal to - 12.

Before we can evaluate a sum or difference involving mixed numbers, the mixed numbers must first be rewritten as fractions.

a bc	a* c+b/c	Simplify
1 23	1* 3+2/3	5/3

When adding or subtracting fractions, they should have the same denominator. In this exercise, we have two fractions with different denominators. 1 23 + (- 2/5) ⇔ 5/3 + (- 2/5) Since 15 is a multiple of both 3 and 5, we can first multiply both the numerator and denominator of 53 by 5 to create a common denominator.

Next, we can multiply both the numerator and denominator of - 25 by 3 to create a common denominator.

Now that we have a common denominator, we can proceed to simplifying the expression.

The simplified expression is equal to 1915.

When adding or subtracting fractions, they should have the same denominator. In this exercise, we have two fractions with different denominators. 4/7 - (- 3/8) Since 56 is a multiple of both 7 and 8, we can first multiply both the numerator and denominator of 47 by 8 to create a common denominator.

Next, we can multiply both the numerator and denominator of - 38 by 7 to create a common denominator.

Now that we have a common denominator, we can proceed to simplifying the expression.

The simplified expression is equal to 5356.

Before we can evaluate a sum or difference involving mixed numbers, the mixed numbers must first be rewritten as fractions.

a bc	a* c+b/c	Simplify
- 4 12	- (4* 2+1/2)	- 9/2
3 19	3* 9+1/9	28/9

When adding or subtracting fractions, they should have the same denominator. In this exercise, we have two fractions with different denominators. - 4 12 + 3 19 ⇔ - 9/2 + 28/9 Since 18 is a multiple of both 2 and 9, we can first multiply both the numerator and denominator of - 92 by 9 to create a common denominator.

Next, let's multiply both the numerator and denominator of 289 by 2 to create a common denominator.

Now that we have a common denominator, we can proceed to simplifying the expression.

The simplified expression is equal to - 2518.