3 years ago

The equation 7(u-5)=21 is solved in several steps below. For each step, choose the reason that best justifies it.

Mathematics

1 answer:

krok68 [10]3 years ago

4 0

Answer:

$u = 8$

Step-by-step explanation:

The steps are not shown. So, I will solve from scratch

Given

$7(u -5) = 21$

Required

Solve, with steps

$7(u -5) = 21$

Apply distributive property

$7u - 7 * 5 =21$

$7u - 35 =21$

Collect like terms

$7u = 35 + 21$

$7u = 56$

Divide both sides by 7

$\frac{7u}{7} = \frac{56}{7}$

$u = 8$

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