20(a-1)=15(a+2)

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Solution for 20(a-1)=15(a+2) equation:


Simplifying
20(a + -1) = 15(a + 2)

Reorder the terms:
20(-1 + a) = 15(a + 2)
(-1 * 20 + a * 20) = 15(a + 2)
(-20 + 20a) = 15(a + 2)

Reorder the terms:
-20 + 20a = 15(2 + a)
-20 + 20a = (2 * 15 + a * 15)
-20 + 20a = (30 + 15a)

Solving
-20 + 20a = 30 + 15a

Solving for variable 'a'.

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

Add '-15a' to each side of the equation.
-20 + 20a + -15a = 30 + 15a + -15a

Combine like terms: 20a + -15a = 5a
-20 + 5a = 30 + 15a + -15a

Combine like terms: 15a + -15a = 0
-20 + 5a = 30 + 0
-20 + 5a = 30

Add '20' to each side of the equation.
-20 + 20 + 5a = 30 + 20

Combine like terms: -20 + 20 = 0
0 + 5a = 30 + 20
5a = 30 + 20

Combine like terms: 30 + 20 = 50
5a = 50

Divide each side by '5'.
a = 10

Simplifying
a = 10

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