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Big Ideas Math Integrated I, 2016

BI

Big Ideas Math Integrated I, 2016 View details

Chapter Test

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Exercise 7 Page 47

Start by distributing 3 to each term inside the parentheses.

x=-6

Practice makes perfect

On the left-hand side, we have a product of 3 and an expression in parentheses. To evaluate this product, we distribute 3 to each term inside the parentheses.

3(x+4)-1=-7

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Distribute 3

Distribute 3

3(x)+3(4)-1=-7

Multiply

3x+12-1=- 7

Subtract term

3x+11=-7

Now we can continue solving for x using inverse operations.

3x+11=-7

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LHS-11=RHS-11

LHS-11=RHS-11

3x+11-11=-7-11

Subtract term

3x=-18

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.LHS /3.=.RHS /3.

3x/3=-18/3

MoveNegNumToFrac

Put minus sign in front of fraction

3x/3=-18/3

Calculate quotient

x=-6

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Exercises p.47