10a+7=8(2a-4)-9

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Solution for 10a+7=8(2a-4)-9 equation:


Simplifying
10a + 7 = 8(2a + -4) + -9

Reorder the terms:
7 + 10a = 8(2a + -4) + -9

Reorder the terms:
7 + 10a = 8(-4 + 2a) + -9
7 + 10a = (-4 * 8 + 2a * 8) + -9
7 + 10a = (-32 + 16a) + -9

Reorder the terms:
7 + 10a = -32 + -9 + 16a

Combine like terms: -32 + -9 = -41
7 + 10a = -41 + 16a

Solving
7 + 10a = -41 + 16a

Solving for variable 'a'.

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

Add '-16a' to each side of the equation.
7 + 10a + -16a = -41 + 16a + -16a

Combine like terms: 10a + -16a = -6a
7 + -6a = -41 + 16a + -16a

Combine like terms: 16a + -16a = 0
7 + -6a = -41 + 0
7 + -6a = -41

Add '-7' to each side of the equation.
7 + -7 + -6a = -41 + -7

Combine like terms: 7 + -7 = 0
0 + -6a = -41 + -7
-6a = -41 + -7

Combine like terms: -41 + -7 = -48
-6a = -48

Divide each side by '-6'.
a = 8

Simplifying
a = 8

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