13=4(z+1)-7

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Solution for 13=4(z+1)-7 equation:


Simplifying
13 = 4(z + 1) + -7

Reorder the terms:
13 = 4(1 + z) + -7
13 = (1 * 4 + z * 4) + -7
13 = (4 + 4z) + -7

Reorder the terms:
13 = 4 + -7 + 4z

Combine like terms: 4 + -7 = -3
13 = -3 + 4z

Solving
13 = -3 + 4z

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '-4z' to each side of the equation.
13 + -4z = -3 + 4z + -4z

Combine like terms: 4z + -4z = 0
13 + -4z = -3 + 0
13 + -4z = -3

Add '-13' to each side of the equation.
13 + -13 + -4z = -3 + -13

Combine like terms: 13 + -13 = 0
0 + -4z = -3 + -13
-4z = -3 + -13

Combine like terms: -3 + -13 = -16
-4z = -16

Divide each side by '-4'.
z = 4

Simplifying
z = 4

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