7(a+3)=4a

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Solution for 7(a+3)=4a equation:


Simplifying
7(a + 3) = 4a

Reorder the terms:
7(3 + a) = 4a
(3 * 7 + a * 7) = 4a
(21 + 7a) = 4a

Solving
21 + 7a = 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.
21 + 7a + -4a = 4a + -4a

Combine like terms: 7a + -4a = 3a
21 + 3a = 4a + -4a

Combine like terms: 4a + -4a = 0
21 + 3a = 0

Add '-21' to each side of the equation.
21 + -21 + 3a = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 3a = 0 + -21
3a = 0 + -21

Combine like terms: 0 + -21 = -21
3a = -21

Divide each side by '3'.
a = -7

Simplifying
a = -7

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