15(a-7)-4a=-4(a+5)

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Solution for 15(a-7)-4a=-4(a+5) equation:


Simplifying
15(a + -7) + -4a = -4(a + 5)

Reorder the terms:
15(-7 + a) + -4a = -4(a + 5)
(-7 * 15 + a * 15) + -4a = -4(a + 5)
(-105 + 15a) + -4a = -4(a + 5)

Combine like terms: 15a + -4a = 11a
-105 + 11a = -4(a + 5)

Reorder the terms:
-105 + 11a = -4(5 + a)
-105 + 11a = (5 * -4 + a * -4)
-105 + 11a = (-20 + -4a)

Solving
-105 + 11a = -20 + -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.
-105 + 11a + 4a = -20 + -4a + 4a

Combine like terms: 11a + 4a = 15a
-105 + 15a = -20 + -4a + 4a

Combine like terms: -4a + 4a = 0
-105 + 15a = -20 + 0
-105 + 15a = -20

Add '105' to each side of the equation.
-105 + 105 + 15a = -20 + 105

Combine like terms: -105 + 105 = 0
0 + 15a = -20 + 105
15a = -20 + 105

Combine like terms: -20 + 105 = 85
15a = 85

Divide each side by '15'.
a = 5.666666667

Simplifying
a = 5.666666667

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