80a-4-70a=7-2

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Solution for 80a-4-70a=7-2 equation:


Simplifying
80a + -4 + -70a = 7 + -2

Reorder the terms:
-4 + 80a + -70a = 7 + -2

Combine like terms: 80a + -70a = 10a
-4 + 10a = 7 + -2

Combine like terms: 7 + -2 = 5
-4 + 10a = 5

Solving
-4 + 10a = 5

Solving for variable 'a'.

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

Add '4' to each side of the equation.
-4 + 4 + 10a = 5 + 4

Combine like terms: -4 + 4 = 0
0 + 10a = 5 + 4
10a = 5 + 4

Combine like terms: 5 + 4 = 9
10a = 9

Divide each side by '10'.
a = 0.9

Simplifying
a = 0.9

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