a+(3a+7)=215

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Solution for a+(3a+7)=215 equation:


Simplifying
a + (3a + 7) = 215

Reorder the terms:
a + (7 + 3a) = 215

Remove parenthesis around (7 + 3a)
a + 7 + 3a = 215

Reorder the terms:
7 + a + 3a = 215

Combine like terms: a + 3a = 4a
7 + 4a = 215

Solving
7 + 4a = 215

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 = 215 + -7

Combine like terms: 7 + -7 = 0
0 + 4a = 215 + -7
4a = 215 + -7

Combine like terms: 215 + -7 = 208
4a = 208

Divide each side by '4'.
a = 52

Simplifying
a = 52

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