7(a-6)+13=3(a-7)

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Solution for 7(a-6)+13=3(a-7) equation:


Simplifying
7(a + -6) + 13 = 3(a + -7)

Reorder the terms:
7(-6 + a) + 13 = 3(a + -7)
(-6 * 7 + a * 7) + 13 = 3(a + -7)
(-42 + 7a) + 13 = 3(a + -7)

Reorder the terms:
-42 + 13 + 7a = 3(a + -7)

Combine like terms: -42 + 13 = -29
-29 + 7a = 3(a + -7)

Reorder the terms:
-29 + 7a = 3(-7 + a)
-29 + 7a = (-7 * 3 + a * 3)
-29 + 7a = (-21 + 3a)

Solving
-29 + 7a = -21 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
-29 + 7a + -3a = -21 + 3a + -3a

Combine like terms: 7a + -3a = 4a
-29 + 4a = -21 + 3a + -3a

Combine like terms: 3a + -3a = 0
-29 + 4a = -21 + 0
-29 + 4a = -21

Add '29' to each side of the equation.
-29 + 29 + 4a = -21 + 29

Combine like terms: -29 + 29 = 0
0 + 4a = -21 + 29
4a = -21 + 29

Combine like terms: -21 + 29 = 8
4a = 8

Divide each side by '4'.
a = 2

Simplifying
a = 2

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