4(a-5)-2(a-4)=-6

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


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

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

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

Reorder the terms:
-20 + 8 + 4a + -2a = -6

Combine like terms: -20 + 8 = -12
-12 + 4a + -2a = -6

Combine like terms: 4a + -2a = 2a
-12 + 2a = -6

Solving
-12 + 2a = -6

Solving for variable 'a'.

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

Add '12' to each side of the equation.
-12 + 12 + 2a = -6 + 12

Combine like terms: -12 + 12 = 0
0 + 2a = -6 + 12
2a = -6 + 12

Combine like terms: -6 + 12 = 6
2a = 6

Divide each side by '2'.
a = 3

Simplifying
a = 3

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