13z+7(-3z-1)=-63

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Solution for 13z+7(-3z-1)=-63 equation:


Simplifying
13z + 7(-3z + -1) = -63

Reorder the terms:
13z + 7(-1 + -3z) = -63
13z + (-1 * 7 + -3z * 7) = -63
13z + (-7 + -21z) = -63

Reorder the terms:
-7 + 13z + -21z = -63

Combine like terms: 13z + -21z = -8z
-7 + -8z = -63

Solving
-7 + -8z = -63

Solving for variable 'z'.

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

Add '7' to each side of the equation.
-7 + 7 + -8z = -63 + 7

Combine like terms: -7 + 7 = 0
0 + -8z = -63 + 7
-8z = -63 + 7

Combine like terms: -63 + 7 = -56
-8z = -56

Divide each side by '-8'.
z = 7

Simplifying
z = 7

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