5a+7=10a-15

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Solution for 5a+7=10a-15 equation:


Simplifying
5a + 7 = 10a + -15

Reorder the terms:
7 + 5a = 10a + -15

Reorder the terms:
7 + 5a = -15 + 10a

Solving
7 + 5a = -15 + 10a

Solving for variable 'a'.

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

Add '-10a' to each side of the equation.
7 + 5a + -10a = -15 + 10a + -10a

Combine like terms: 5a + -10a = -5a
7 + -5a = -15 + 10a + -10a

Combine like terms: 10a + -10a = 0
7 + -5a = -15 + 0
7 + -5a = -15

Add '-7' to each side of the equation.
7 + -7 + -5a = -15 + -7

Combine like terms: 7 + -7 = 0
0 + -5a = -15 + -7
-5a = -15 + -7

Combine like terms: -15 + -7 = -22
-5a = -22

Divide each side by '-5'.
a = 4.4

Simplifying
a = 4.4

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