What is the answer to z+3(z+7)=-5 ?

The answer to z+3(z+7)=-5 is z=-13/2

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z+3(z+7)=-5

z + 3 (z + 7) = - 5

z = - \frac{13}{2}

Solution steps

z + 3 (z + 7) = - 5

Expand

3 (z + 7) : 3 z + 21

z + 3 z + 21 = - 5

Add similar elements:

z + 3 z = 4 z

4 z + 21 = - 5

Move

21

to the right side

4 z = - 26

Divide both sides by

4

z = - \frac{13}{2}

4 x^{2} = 9 x

- \frac{1}{3} - 1

6 x^{2} + 294 = 0

4 2^{3}

1 + ∣ 1 + b ∣ < 4