7a+42=84

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Solution for 7a+42=84 equation: 


Simplifying
7a + 42 = 84

Reorder the terms:
42 + 7a = 84

Solving
42 + 7a = 84

Solving for variable 'a'.

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

Add '-42' to each side of the equation.
42 + -42 + 7a = 84 + -42

Combine like terms: 42 + -42 = 0
0 + 7a = 84 + -42
7a = 84 + -42

Combine like terms: 84 + -42 = 42
7a = 42

Divide each side by '7'.
a = 6

Simplifying
a = 6

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