3 years ago

What value of x makes this proportion true 3/x=15/40

2 answers:

8 0

3/x=15/40
solve for x
multiply both sides by x
3=15x/40
multiply both sides by 40
120=15x
dvide both sdies by 15
8=x

the answer is 8

or you could simplifyy 15/40 to get 3/8

denis-greek [22]3 years ago

3 0

If you would like to solve the equation 3 / x = 15 / 40 for x, you can calculate this using the following steps:

3 / x = 15 / 40 /*x
3 = 15 / 40 * x /*40
3 * 40 = 15 * x /15
x = 3 * 40 / 15
x = 8

The correct result would be 8.

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