-7a-7=-42

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Solution for -7a-7=-42 equation:


Simplifying
-7a + -7 = -42

Reorder the terms:
-7 + -7a = -42

Solving
-7 + -7a = -42

Solving for variable 'a'.

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

Add '7' to each side of the equation.
-7 + 7 + -7a = -42 + 7

Combine like terms: -7 + 7 = 0
0 + -7a = -42 + 7
-7a = -42 + 7

Combine like terms: -42 + 7 = -35
-7a = -35

Divide each side by '-7'.
a = 5

Simplifying
a = 5

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