83a-22a+4a-64a+3a+7=91

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Solution for 83a-22a+4a-64a+3a+7=91 equation:


Simplifying
83a + -22a + 4a + -64a + 3a + 7 = 91

Reorder the terms:
7 + 83a + -22a + 4a + -64a + 3a = 91

Combine like terms: 83a + -22a = 61a
7 + 61a + 4a + -64a + 3a = 91

Combine like terms: 61a + 4a = 65a
7 + 65a + -64a + 3a = 91

Combine like terms: 65a + -64a = 1a
7 + 1a + 3a = 91

Combine like terms: 1a + 3a = 4a
7 + 4a = 91

Solving
7 + 4a = 91

Solving for variable 'a'.

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

Add '-7' to each side of the equation.
7 + -7 + 4a = 91 + -7

Combine like terms: 7 + -7 = 0
0 + 4a = 91 + -7
4a = 91 + -7

Combine like terms: 91 + -7 = 84
4a = 84

Divide each side by '4'.
a = 21

Simplifying
a = 21

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