147=7(-3a+5)-7a

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Solution for 147=7(-3a+5)-7a equation:


Simplifying
147 = 7(-3a + 5) + -7a

Reorder the terms:
147 = 7(5 + -3a) + -7a
147 = (5 * 7 + -3a * 7) + -7a
147 = (35 + -21a) + -7a

Combine like terms: -21a + -7a = -28a
147 = 35 + -28a

Solving
147 = 35 + -28a

Solving for variable 'a'.

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

Add '28a' to each side of the equation.
147 + 28a = 35 + -28a + 28a

Combine like terms: -28a + 28a = 0
147 + 28a = 35 + 0
147 + 28a = 35

Add '-147' to each side of the equation.
147 + -147 + 28a = 35 + -147

Combine like terms: 147 + -147 = 0
0 + 28a = 35 + -147
28a = 35 + -147

Combine like terms: 35 + -147 = -112
28a = -112

Divide each side by '28'.
a = -4

Simplifying
a = -4

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