-7a+-9=-142

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Solution for -7a+-9=-142 equation: 


Simplifying
-7a + -9 = -142

Reorder the terms:
-9 + -7a = -142

Solving
-9 + -7a = -142

Solving for variable 'a'.

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

Add '9' to each side of the equation.
-9 + 9 + -7a = -142 + 9

Combine like terms: -9 + 9 = 0
0 + -7a = -142 + 9
-7a = -142 + 9

Combine like terms: -142 + 9 = -133
-7a = -133

Divide each side by '-7'.
a = 19

Simplifying
a = 19

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