5(a-7)+9=2(a-7)

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Solution for 5(a-7)+9=2(a-7) equation:


Simplifying
5(a + -7) + 9 = 2(a + -7)

Reorder the terms:
5(-7 + a) + 9 = 2(a + -7)
(-7 * 5 + a * 5) + 9 = 2(a + -7)
(-35 + 5a) + 9 = 2(a + -7)

Reorder the terms:
-35 + 9 + 5a = 2(a + -7)

Combine like terms: -35 + 9 = -26
-26 + 5a = 2(a + -7)

Reorder the terms:
-26 + 5a = 2(-7 + a)
-26 + 5a = (-7 * 2 + a * 2)
-26 + 5a = (-14 + 2a)

Solving
-26 + 5a = -14 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
-26 + 5a + -2a = -14 + 2a + -2a

Combine like terms: 5a + -2a = 3a
-26 + 3a = -14 + 2a + -2a

Combine like terms: 2a + -2a = 0
-26 + 3a = -14 + 0
-26 + 3a = -14

Add '26' to each side of the equation.
-26 + 26 + 3a = -14 + 26

Combine like terms: -26 + 26 = 0
0 + 3a = -14 + 26
3a = -14 + 26

Combine like terms: -14 + 26 = 12
3a = 12

Divide each side by '3'.
a = 4

Simplifying
a = 4

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