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2 years ago

28/21 = 42/x solve for x

2 answers:

8 0

28/21=42/x multiply both sides by x

28/21x=42 divide by 28/21 on both sides ( or multiply both sides by 21/28)

X= 63/2
X= 31 1/2

DedPeter [7]2 years ago

4 0

28/21 = 42/x

Cross Multiply

28*x = 21*42

x = 21*42/28 use your calculator.

x = 31.5

x = 31 1/2

option C

Hope this explains it.

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