-2a+7-3(-a-4a)=

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Solution for -2a+7-3(-a-4a)= equation:


Simplifying
-2a + 7 + -3(-1a + -4a) = 0

Combine like terms: -1a + -4a = -5a
-2a + 7 + -3(-5a) = 0

Remove parenthesis around (-5a)
-2a + 7 + -3 * -5a = 0

Multiply -3 * -5
-2a + 7 + 15a = 0

Reorder the terms:
7 + -2a + 15a = 0

Combine like terms: -2a + 15a = 13a
7 + 13a = 0

Solving
7 + 13a = 0

Solving for variable 'a'.

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

Add '-7' to each side of the equation.
7 + -7 + 13a = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 13a = 0 + -7
13a = 0 + -7

Combine like terms: 0 + -7 = -7
13a = -7

Divide each side by '13'.
a = -0.5384615385

Simplifying
a = -0.5384615385

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