-3(7-3a)=7a-11

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Solution for -3(7-3a)=7a-11 equation:


Simplifying
-3(7 + -3a) = 7a + -11
(7 * -3 + -3a * -3) = 7a + -11
(-21 + 9a) = 7a + -11

Reorder the terms:
-21 + 9a = -11 + 7a

Solving
-21 + 9a = -11 + 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
-21 + 9a + -7a = -11 + 7a + -7a

Combine like terms: 9a + -7a = 2a
-21 + 2a = -11 + 7a + -7a

Combine like terms: 7a + -7a = 0
-21 + 2a = -11 + 0
-21 + 2a = -11

Add '21' to each side of the equation.
-21 + 21 + 2a = -11 + 21

Combine like terms: -21 + 21 = 0
0 + 2a = -11 + 21
2a = -11 + 21

Combine like terms: -11 + 21 = 10
2a = 10

Divide each side by '2'.
a = 5

Simplifying
a = 5

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