7+4(-3+8a)=155

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Solution for 7+4(-3+8a)=155 equation: 


Simplifying
7 + 4(-3 + 8a) = 155
7 + (-3 * 4 + 8a * 4) = 155
7 + (-12 + 32a) = 155

Combine like terms: 7 + -12 = -5
-5 + 32a = 155

Solving
-5 + 32a = 155

Solving for variable 'a'.

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

Add '5' to each side of the equation.
-5 + 5 + 32a = 155 + 5

Combine like terms: -5 + 5 = 0
0 + 32a = 155 + 5
32a = 155 + 5

Combine like terms: 155 + 5 = 160
32a = 160

Divide each side by '32'.
a = 5

Simplifying
a = 5

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