-7(1+7a)=189

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Solution for -7(1+7a)=189 equation: 


Simplifying
-7(1 + 7a) = 189
(1 * -7 + 7a * -7) = 189
(-7 + -49a) = 189

Solving
-7 + -49a = 189

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 + -49a = 189 + 7

Combine like terms: -7 + 7 = 0
0 + -49a = 189 + 7
-49a = 189 + 7

Combine like terms: 189 + 7 = 196
-49a = 196

Divide each side by '-49'.
a = -4

Simplifying
a = -4

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