-6a-15=13(a-7)

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Solution for -6a-15=13(a-7) equation:


Simplifying
-6a + -15 = 13(a + -7)

Reorder the terms:
-15 + -6a = 13(a + -7)

Reorder the terms:
-15 + -6a = 13(-7 + a)
-15 + -6a = (-7 * 13 + a * 13)
-15 + -6a = (-91 + 13a)

Solving
-15 + -6a = -91 + 13a

Solving for variable 'a'.

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

Add '-13a' to each side of the equation.
-15 + -6a + -13a = -91 + 13a + -13a

Combine like terms: -6a + -13a = -19a
-15 + -19a = -91 + 13a + -13a

Combine like terms: 13a + -13a = 0
-15 + -19a = -91 + 0
-15 + -19a = -91

Add '15' to each side of the equation.
-15 + 15 + -19a = -91 + 15

Combine like terms: -15 + 15 = 0
0 + -19a = -91 + 15
-19a = -91 + 15

Combine like terms: -91 + 15 = -76
-19a = -76

Divide each side by '-19'.
a = 4

Simplifying
a = 4

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