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

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


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

Combine like terms: a + 2a = 3a
4(3a) = 20 + -3a

Remove parenthesis around (3a)
4 * 3a = 20 + -3a

Multiply 4 * 3
12a = 20 + -3a

Solving
12a = 20 + -3a

Solving for variable 'a'.

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

Add '3a' to each side of the equation.
12a + 3a = 20 + -3a + 3a

Combine like terms: 12a + 3a = 15a
15a = 20 + -3a + 3a

Combine like terms: -3a + 3a = 0
15a = 20 + 0
15a = 20

Divide each side by '15'.
a = 1.333333333

Simplifying
a = 1.333333333

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