4(a-5)-15(a-4)=6(2a+8)

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Solution for 4(a-5)-15(a-4)=6(2a+8) equation:


Simplifying
4(a + -5) + -15(a + -4) = 6(2a + 8)

Reorder the terms:
4(-5 + a) + -15(a + -4) = 6(2a + 8)
(-5 * 4 + a * 4) + -15(a + -4) = 6(2a + 8)
(-20 + 4a) + -15(a + -4) = 6(2a + 8)

Reorder the terms:
-20 + 4a + -15(-4 + a) = 6(2a + 8)
-20 + 4a + (-4 * -15 + a * -15) = 6(2a + 8)
-20 + 4a + (60 + -15a) = 6(2a + 8)

Reorder the terms:
-20 + 60 + 4a + -15a = 6(2a + 8)

Combine like terms: -20 + 60 = 40
40 + 4a + -15a = 6(2a + 8)

Combine like terms: 4a + -15a = -11a
40 + -11a = 6(2a + 8)

Reorder the terms:
40 + -11a = 6(8 + 2a)
40 + -11a = (8 * 6 + 2a * 6)
40 + -11a = (48 + 12a)

Solving
40 + -11a = 48 + 12a

Solving for variable 'a'.

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

Add '-12a' to each side of the equation.
40 + -11a + -12a = 48 + 12a + -12a

Combine like terms: -11a + -12a = -23a
40 + -23a = 48 + 12a + -12a

Combine like terms: 12a + -12a = 0
40 + -23a = 48 + 0
40 + -23a = 48

Add '-40' to each side of the equation.
40 + -40 + -23a = 48 + -40

Combine like terms: 40 + -40 = 0
0 + -23a = 48 + -40
-23a = 48 + -40

Combine like terms: 48 + -40 = 8
-23a = 8

Divide each side by '-23'.
a = -0.347826087

Simplifying
a = -0.347826087

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