3+2z-1=7z+7-42

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Solution for 3+2z-1=7z+7-42 equation:


Simplifying
3 + 2z + -1 = 7z + 7 + -42

Reorder the terms:
3 + -1 + 2z = 7z + 7 + -42

Combine like terms: 3 + -1 = 2
2 + 2z = 7z + 7 + -42

Reorder the terms:
2 + 2z = 7 + -42 + 7z

Combine like terms: 7 + -42 = -35
2 + 2z = -35 + 7z

Solving
2 + 2z = -35 + 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.
2 + 2z + -7z = -35 + 7z + -7z

Combine like terms: 2z + -7z = -5z
2 + -5z = -35 + 7z + -7z

Combine like terms: 7z + -7z = 0
2 + -5z = -35 + 0
2 + -5z = -35

Add '-2' to each side of the equation.
2 + -2 + -5z = -35 + -2

Combine like terms: 2 + -2 = 0
0 + -5z = -35 + -2
-5z = -35 + -2

Combine like terms: -35 + -2 = -37
-5z = -37

Divide each side by '-5'.
z = 7.4

Simplifying
z = 7.4

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