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

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


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

Remove parenthesis around (3 + -5a)
7 + -21a = 3 + -5a

Solving
7 + -21a = 3 + -5a

Solving for variable 'a'.

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

Add '5a' to each side of the equation.
7 + -21a + 5a = 3 + -5a + 5a

Combine like terms: -21a + 5a = -16a
7 + -16a = 3 + -5a + 5a

Combine like terms: -5a + 5a = 0
7 + -16a = 3 + 0
7 + -16a = 3

Add '-7' to each side of the equation.
7 + -7 + -16a = 3 + -7

Combine like terms: 7 + -7 = 0
0 + -16a = 3 + -7
-16a = 3 + -7

Combine like terms: 3 + -7 = -4
-16a = -4

Divide each side by '-16'.
a = 0.25

Simplifying
a = 0.25

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