3a+9=-4a+170

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Solution for 3a+9=-4a+170 equation:


Simplifying
3a + 9 = -4a + 170

Reorder the terms:
9 + 3a = -4a + 170

Reorder the terms:
9 + 3a = 170 + -4a

Solving
9 + 3a = 170 + -4a

Solving for variable 'a'.

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

Add '4a' to each side of the equation.
9 + 3a + 4a = 170 + -4a + 4a

Combine like terms: 3a + 4a = 7a
9 + 7a = 170 + -4a + 4a

Combine like terms: -4a + 4a = 0
9 + 7a = 170 + 0
9 + 7a = 170

Add '-9' to each side of the equation.
9 + -9 + 7a = 170 + -9

Combine like terms: 9 + -9 = 0
0 + 7a = 170 + -9
7a = 170 + -9

Combine like terms: 170 + -9 = 161
7a = 161

Divide each side by '7'.
a = 23

Simplifying
a = 23

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