7+a=17+3a

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Solution for 7+a=17+3a equation:


Simplifying
7 + a = 17 + 3a

Solving
7 + a = 17 + 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.
7 + a + -3a = 17 + 3a + -3a

Combine like terms: a + -3a = -2a
7 + -2a = 17 + 3a + -3a

Combine like terms: 3a + -3a = 0
7 + -2a = 17 + 0
7 + -2a = 17

Add '-7' to each side of the equation.
7 + -7 + -2a = 17 + -7

Combine like terms: 7 + -7 = 0
0 + -2a = 17 + -7
-2a = 17 + -7

Combine like terms: 17 + -7 = 10
-2a = 10

Divide each side by '-2'.
a = -5

Simplifying
a = -5

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