2a+5a-10=3a+20

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Solution for 2a+5a-10=3a+20 equation:


Simplifying
2a + 5a + -10 = 3a + 20

Reorder the terms:
-10 + 2a + 5a = 3a + 20

Combine like terms: 2a + 5a = 7a
-10 + 7a = 3a + 20

Reorder the terms:
-10 + 7a = 20 + 3a

Solving
-10 + 7a = 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.
-10 + 7a + -3a = 20 + 3a + -3a

Combine like terms: 7a + -3a = 4a
-10 + 4a = 20 + 3a + -3a

Combine like terms: 3a + -3a = 0
-10 + 4a = 20 + 0
-10 + 4a = 20

Add '10' to each side of the equation.
-10 + 10 + 4a = 20 + 10

Combine like terms: -10 + 10 = 0
0 + 4a = 20 + 10
4a = 20 + 10

Combine like terms: 20 + 10 = 30
4a = 30

Divide each side by '4'.
a = 7.5

Simplifying
a = 7.5

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