-5+7(1+3a)=149

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Solution for -5+7(1+3a)=149 equation:


Simplifying
-5 + 7(1 + 3a) = 149
-5 + (1 * 7 + 3a * 7) = 149
-5 + (7 + 21a) = 149

Combine like terms: -5 + 7 = 2
2 + 21a = 149

Solving
2 + 21a = 149

Solving for variable 'a'.

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

Add '-2' to each side of the equation.
2 + -2 + 21a = 149 + -2

Combine like terms: 2 + -2 = 0
0 + 21a = 149 + -2
21a = 149 + -2

Combine like terms: 149 + -2 = 147
21a = 147

Divide each side by '21'.
a = 7

Simplifying
a = 7

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