.20(10a-15)=3-2a

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Solution for .20(10a-15)=3-2a equation:


Simplifying
0.20(10a + -15) = 3 + -2a

Reorder the terms:
0.20(-15 + 10a) = 3 + -2a
(-15 * 0.20 + 10a * 0.20) = 3 + -2a
(-3 + 2a) = 3 + -2a

Solving
-3 + 2a = 3 + -2a

Solving for variable 'a'.

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

Add '2a' to each side of the equation.
-3 + 2a + 2a = 3 + -2a + 2a

Combine like terms: 2a + 2a = 4a
-3 + 4a = 3 + -2a + 2a

Combine like terms: -2a + 2a = 0
-3 + 4a = 3 + 0
-3 + 4a = 3

Add '3' to each side of the equation.
-3 + 3 + 4a = 3 + 3

Combine like terms: -3 + 3 = 0
0 + 4a = 3 + 3
4a = 3 + 3

Combine like terms: 3 + 3 = 6
4a = 6

Divide each side by '4'.
a = 1.5

Simplifying
a = 1.5

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