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svet-max [94.6K]
3 years ago
9

What is r if -4(r+3) = -42

Mathematics
2 answers:
Shalnov [3]3 years ago
8 0

Steps to solve:

-4(r + 3) = -42

~Distribute

(-4 * r) + (-4 * 3) = -42

~Simplify

-4r - 12 = -42

~Add 12 to both sides

-4r - 12 + 12 = -42 + 12

~Simplify

-4r = -30

~Divide -4 to both sides

-4r/-4 = -30/-4

~Simplify

r = 7.5

Best of Luck!

KIM [24]3 years ago
6 0

Answer:

7.5

Step-by-step explanation:

(-4) (7.5 + 3)= -42

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