87+(a+7)=3a

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Solution for 87+(a+7)=3a equation:


Simplifying
87 + (a + 7) = 3a

Reorder the terms:
87 + (7 + a) = 3a

Remove parenthesis around (7 + a)
87 + 7 + a = 3a

Combine like terms: 87 + 7 = 94
94 + a = 3a

Solving
94 + a = 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
94 + a + -3a = 3a + -3a

Combine like terms: a + -3a = -2a
94 + -2a = 3a + -3a

Combine like terms: 3a + -3a = 0
94 + -2a = 0

Add '-94' to each side of the equation.
94 + -94 + -2a = 0 + -94

Combine like terms: 94 + -94 = 0
0 + -2a = 0 + -94
-2a = 0 + -94

Combine like terms: 0 + -94 = -94
-2a = -94

Divide each side by '-2'.
a = 47

Simplifying
a = 47

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