z+(10z-126)+(10z-42)=189

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Solution for z+(10z-126)+(10z-42)=189 equation:


Simplifying
z + (10z + -126) + (10z + -42) = 189

Reorder the terms:
z + (-126 + 10z) + (10z + -42) = 189

Remove parenthesis around (-126 + 10z)
z + -126 + 10z + (10z + -42) = 189

Reorder the terms:
z + -126 + 10z + (-42 + 10z) = 189

Remove parenthesis around (-42 + 10z)
z + -126 + 10z + -42 + 10z = 189

Reorder the terms:
-126 + -42 + z + 10z + 10z = 189

Combine like terms: -126 + -42 = -168
-168 + z + 10z + 10z = 189

Combine like terms: z + 10z = 11z
-168 + 11z + 10z = 189

Combine like terms: 11z + 10z = 21z
-168 + 21z = 189

Solving
-168 + 21z = 189

Solving for variable 'z'.

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

Add '168' to each side of the equation.
-168 + 168 + 21z = 189 + 168

Combine like terms: -168 + 168 = 0
0 + 21z = 189 + 168
21z = 189 + 168

Combine like terms: 189 + 168 = 357
21z = 357

Divide each side by '21'.
z = 17

Simplifying
z = 17

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