7(3-a)+a=5-2a

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Solution for 7(3-a)+a=5-2a equation:


Simplifying
7(3 + -1a) + a = 5 + -2a
(3 * 7 + -1a * 7) + a = 5 + -2a
(21 + -7a) + a = 5 + -2a

Combine like terms: -7a + a = -6a
21 + -6a = 5 + -2a

Solving
21 + -6a = 5 + -2a

Solving for variable 'a'.

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

Add '2a' to each side of the equation.
21 + -6a + 2a = 5 + -2a + 2a

Combine like terms: -6a + 2a = -4a
21 + -4a = 5 + -2a + 2a

Combine like terms: -2a + 2a = 0
21 + -4a = 5 + 0
21 + -4a = 5

Add '-21' to each side of the equation.
21 + -21 + -4a = 5 + -21

Combine like terms: 21 + -21 = 0
0 + -4a = 5 + -21
-4a = 5 + -21

Combine like terms: 5 + -21 = -16
-4a = -16

Divide each side by '-4'.
a = 4

Simplifying
a = 4

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