-3=-4(3+5a)+7a

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Solution for -3=-4(3+5a)+7a equation:


Simplifying
-3 = -4(3 + 5a) + 7a
-3 = (3 * -4 + 5a * -4) + 7a
-3 = (-12 + -20a) + 7a

Combine like terms: -20a + 7a = -13a
-3 = -12 + -13a

Solving
-3 = -12 + -13a

Solving for variable 'a'.

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

Add '13a' to each side of the equation.
-3 + 13a = -12 + -13a + 13a

Combine like terms: -13a + 13a = 0
-3 + 13a = -12 + 0
-3 + 13a = -12

Add '3' to each side of the equation.
-3 + 3 + 13a = -12 + 3

Combine like terms: -3 + 3 = 0
0 + 13a = -12 + 3
13a = -12 + 3

Combine like terms: -12 + 3 = -9
13a = -9

Divide each side by '13'.
a = -0.6923076923

Simplifying
a = -0.6923076923

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