5(a+2)-3(a-4)=20

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Solution for 5(a+2)-3(a-4)=20 equation:


Simplifying
5(a + 2) + -3(a + -4) = 20

Reorder the terms:
5(2 + a) + -3(a + -4) = 20
(2 * 5 + a * 5) + -3(a + -4) = 20
(10 + 5a) + -3(a + -4) = 20

Reorder the terms:
10 + 5a + -3(-4 + a) = 20
10 + 5a + (-4 * -3 + a * -3) = 20
10 + 5a + (12 + -3a) = 20

Reorder the terms:
10 + 12 + 5a + -3a = 20

Combine like terms: 10 + 12 = 22
22 + 5a + -3a = 20

Combine like terms: 5a + -3a = 2a
22 + 2a = 20

Solving
22 + 2a = 20

Solving for variable 'a'.

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

Add '-22' to each side of the equation.
22 + -22 + 2a = 20 + -22

Combine like terms: 22 + -22 = 0
0 + 2a = 20 + -22
2a = 20 + -22

Combine like terms: 20 + -22 = -2
2a = -2

Divide each side by '2'.
a = -1

Simplifying
a = -1

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