7=8a+4a-13

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Solution for 7=8a+4a-13 equation:


Simplifying
7 = 8a + 4a + -13

Reorder the terms:
7 = -13 + 8a + 4a

Combine like terms: 8a + 4a = 12a
7 = -13 + 12a

Solving
7 = -13 + 12a

Solving for variable 'a'.

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

Add '-12a' to each side of the equation.
7 + -12a = -13 + 12a + -12a

Combine like terms: 12a + -12a = 0
7 + -12a = -13 + 0
7 + -12a = -13

Add '-7' to each side of the equation.
7 + -7 + -12a = -13 + -7

Combine like terms: 7 + -7 = 0
0 + -12a = -13 + -7
-12a = -13 + -7

Combine like terms: -13 + -7 = -20
-12a = -20

Divide each side by '-12'.
a = 1.666666667

Simplifying
a = 1.666666667

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