Big Ideas Math: Modeling Real Life, Grade 7
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Big Ideas Math: Modeling Real Life, Grade 7 View details
1. Solving Equations Using Addition or Subtraction
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Exercise 4 Page 131

Write 6.75 as the product of 0.75 and 9.

0.75(z - 9)

Practice makes perfect
We want to factor out the coefficient of the variable term in the given expression. 0.75z - 6.75The coefficient is equal to 0.75. Let's split into factors 0.75z and 6.75. One of the factors should be equal to 0.75. 0.75z&= 0.75* z 6.75&= 0.75* 9 6.75 is divisible by 0.75, so we can factor out 0.75.
0.75z - 6.75
0.75* z - 0.75* 9
0.75(z - 9)