Question

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Answer 1

Hello!

Answer:

$\boxed{ \bf w~=~4}$

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Explanation:

7(w + 9) = 91

First, we must multiply everything in the brackets by 7.

= 7(w) + 7(9) = 91

= 7w + 63 = 91

Now, we must solve for w. To do this, we will need to isolate it by perfoming the opposite operation on 63. Since it is +63, we'll need to subtract it from both sides of the equation.

= 7w + 63 = 91

         - 63   - 63

7w = 28

Since w is being multiplied, we'll have to perform the opposite operation (which is division).

$\frac{7w}{7} = \frac{28}{7}$

w = 4

         

Answer 2

The right answer is 4.

look at the attached picture

Hope it will be helpful to you..