(2a+3)-(4a+-8)=7

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Solution for (2a+3)-(4a+-8)=7 equation:


Simplifying
(2a + 3) + -1(4a + -8) = 7

Reorder the terms:
(3 + 2a) + -1(4a + -8) = 7

Remove parenthesis around (3 + 2a)
3 + 2a + -1(4a + -8) = 7

Reorder the terms:
3 + 2a + -1(-8 + 4a) = 7
3 + 2a + (-8 * -1 + 4a * -1) = 7
3 + 2a + (8 + -4a) = 7

Reorder the terms:
3 + 8 + 2a + -4a = 7

Combine like terms: 3 + 8 = 11
11 + 2a + -4a = 7

Combine like terms: 2a + -4a = -2a
11 + -2a = 7

Solving
11 + -2a = 7

Solving for variable 'a'.

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

Add '-11' to each side of the equation.
11 + -11 + -2a = 7 + -11

Combine like terms: 11 + -11 = 0
0 + -2a = 7 + -11
-2a = 7 + -11

Combine like terms: 7 + -11 = -4
-2a = -4

Divide each side by '-2'.
a = 2

Simplifying
a = 2

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