-90=-5(5-2a)+3a

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Solution for -90=-5(5-2a)+3a equation:


Simplifying
-90 = -5(5 + -2a) + 3a
-90 = (5 * -5 + -2a * -5) + 3a
-90 = (-25 + 10a) + 3a

Combine like terms: 10a + 3a = 13a
-90 = -25 + 13a

Solving
-90 = -25 + 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.
-90 + -13a = -25 + 13a + -13a

Combine like terms: 13a + -13a = 0
-90 + -13a = -25 + 0
-90 + -13a = -25

Add '90' to each side of the equation.
-90 + 90 + -13a = -25 + 90

Combine like terms: -90 + 90 = 0
0 + -13a = -25 + 90
-13a = -25 + 90

Combine like terms: -25 + 90 = 65
-13a = 65

Divide each side by '-13'.
a = -5

Simplifying
a = -5

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