7(a+3b)-3(2a-4b)=

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Solution for 7(a+3b)-3(2a-4b)= equation:


Simplifying
7(a + 3b) + -3(2a + -4b) = 0
(a * 7 + 3b * 7) + -3(2a + -4b) = 0
(7a + 21b) + -3(2a + -4b) = 0
7a + 21b + (2a * -3 + -4b * -3) = 0
7a + 21b + (-6a + 12b) = 0

Reorder the terms:
7a + -6a + 21b + 12b = 0

Combine like terms: 7a + -6a = 1a
1a + 21b + 12b = 0

Combine like terms: 21b + 12b = 33b
1a + 33b = 0

Solving
1a + 33b = 0

Solving for variable 'a'.

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

Add '-33b' to each side of the equation.
1a + 33b + -33b = 0 + -33b

Combine like terms: 33b + -33b = 0
1a + 0 = 0 + -33b
1a = 0 + -33b
Remove the zero:
1a = -33b

Divide each side by '1'.
a = -33b

Simplifying
a = -33b

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