3 years ago

What value of x will make these two expression equivalent?

Mathematics

2 answers:

alexandr402 [8]3 years ago

7 0

Answer:

D. x = -9

Step-by-step explanation:

We want -(3/7) = (x/21)

Cross multiply: 7x = - 63

Check:

Does (-9/21) = -(3/7)?

(-9/21) reduces to -(3/7) <u>YES</u>

Natali5045456 [20]3 years ago

7 0

D because you would cross multiply 7 and x which would give u -63 making x = -9. -9/21 simplifies down to -3/7.

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