-6a-15=-4(a-7)

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Solution for -6a-15=-4(a-7) equation:


Simplifying
-6a + -15 = -4(a + -7)

Reorder the terms:
-15 + -6a = -4(a + -7)

Reorder the terms:
-15 + -6a = -4(-7 + a)
-15 + -6a = (-7 * -4 + a * -4)
-15 + -6a = (28 + -4a)

Solving
-15 + -6a = 28 + -4a

Solving for variable 'a'.

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

Add '4a' to each side of the equation.
-15 + -6a + 4a = 28 + -4a + 4a

Combine like terms: -6a + 4a = -2a
-15 + -2a = 28 + -4a + 4a

Combine like terms: -4a + 4a = 0
-15 + -2a = 28 + 0
-15 + -2a = 28

Add '15' to each side of the equation.
-15 + 15 + -2a = 28 + 15

Combine like terms: -15 + 15 = 0
0 + -2a = 28 + 15
-2a = 28 + 15

Combine like terms: 28 + 15 = 43
-2a = 43

Divide each side by '-2'.
a = -21.5

Simplifying
a = -21.5

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