-2=7(a+2)+3(2a-1)

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Solution for -2=7(a+2)+3(2a-1) equation:


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

Reorder the terms:
-2 = 7(2 + a) + 3(2a + -1)
-2 = (2 * 7 + a * 7) + 3(2a + -1)
-2 = (14 + 7a) + 3(2a + -1)

Reorder the terms:
-2 = 14 + 7a + 3(-1 + 2a)
-2 = 14 + 7a + (-1 * 3 + 2a * 3)
-2 = 14 + 7a + (-3 + 6a)

Reorder the terms:
-2 = 14 + -3 + 7a + 6a

Combine like terms: 14 + -3 = 11
-2 = 11 + 7a + 6a

Combine like terms: 7a + 6a = 13a
-2 = 11 + 13a

Solving
-2 = 11 + 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.
-2 + -13a = 11 + 13a + -13a

Combine like terms: 13a + -13a = 0
-2 + -13a = 11 + 0
-2 + -13a = 11

Add '2' to each side of the equation.
-2 + 2 + -13a = 11 + 2

Combine like terms: -2 + 2 = 0
0 + -13a = 11 + 2
-13a = 11 + 2

Combine like terms: 11 + 2 = 13
-13a = 13

Divide each side by '-13'.
a = -1

Simplifying
a = -1

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