8z+15=7z+13

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Solution for 8z+15=7z+13 equation:


Simplifying
8z + 15 = 7z + 13

Reorder the terms:
15 + 8z = 7z + 13

Reorder the terms:
15 + 8z = 13 + 7z

Solving
15 + 8z = 13 + 7z

Solving for variable 'z'.

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

Add '-7z' to each side of the equation.
15 + 8z + -7z = 13 + 7z + -7z

Combine like terms: 8z + -7z = 1z
15 + 1z = 13 + 7z + -7z

Combine like terms: 7z + -7z = 0
15 + 1z = 13 + 0
15 + 1z = 13

Add '-15' to each side of the equation.
15 + -15 + 1z = 13 + -15

Combine like terms: 15 + -15 = 0
0 + 1z = 13 + -15
1z = 13 + -15

Combine like terms: 13 + -15 = -2
1z = -2

Divide each side by '1'.
z = -2

Simplifying
z = -2

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