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

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Solution for 1-a+a=-4(1+3a)+7(2+3a) equation:


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

Combine like terms: -1a + a = 0
1 + 0 = -4(1 + 3a) + 7(2 + 3a)
1 = -4(1 + 3a) + 7(2 + 3a)
1 = (1 * -4 + 3a * -4) + 7(2 + 3a)
1 = (-4 + -12a) + 7(2 + 3a)
1 = -4 + -12a + (2 * 7 + 3a * 7)
1 = -4 + -12a + (14 + 21a)

Reorder the terms:
1 = -4 + 14 + -12a + 21a

Combine like terms: -4 + 14 = 10
1 = 10 + -12a + 21a

Combine like terms: -12a + 21a = 9a
1 = 10 + 9a

Solving
1 = 10 + 9a

Solving for variable 'a'.

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

Add '-9a' to each side of the equation.
1 + -9a = 10 + 9a + -9a

Combine like terms: 9a + -9a = 0
1 + -9a = 10 + 0
1 + -9a = 10

Add '-1' to each side of the equation.
1 + -1 + -9a = 10 + -1

Combine like terms: 1 + -1 = 0
0 + -9a = 10 + -1
-9a = 10 + -1

Combine like terms: 10 + -1 = 9
-9a = 9

Divide each side by '-9'.
a = -1

Simplifying
a = -1

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