7(1-4a)-5a=-158

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Solution for 7(1-4a)-5a=-158 equation:


Simplifying
7(1 + -4a) + -5a = -158
(1 * 7 + -4a * 7) + -5a = -158
(7 + -28a) + -5a = -158

Combine like terms: -28a + -5a = -33a
7 + -33a = -158

Solving
7 + -33a = -158

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 + -33a = -158 + -7

Combine like terms: 7 + -7 = 0
0 + -33a = -158 + -7
-33a = -158 + -7

Combine like terms: -158 + -7 = -165
-33a = -165

Divide each side by '-33'.
a = 5

Simplifying
a = 5

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