3a(x+7y)-b(x+7y)=

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Solution for 3a(x+7y)-b(x+7y)= equation:


Simplifying
3a(x + 7y) + -1b(x + 7y) = 0
(x * 3a + 7y * 3a) + -1b(x + 7y) = 0
(3ax + 21ay) + -1b(x + 7y) = 0
3ax + 21ay + (x * -1b + 7y * -1b) = 0
3ax + 21ay + (-1bx + -7by) = 0

Solving
3ax + 21ay + -1bx + -7by = 0

Solving for variable 'a'.

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

Add 'bx' to each side of the equation.
3ax + 21ay + -1bx + bx + -7by = 0 + bx

Combine like terms: -1bx + bx = 0
3ax + 21ay + 0 + -7by = 0 + bx
3ax + 21ay + -7by = 0 + bx
Remove the zero:
3ax + 21ay + -7by = bx

Add '7by' to each side of the equation.
3ax + 21ay + -7by + 7by = bx + 7by

Combine like terms: -7by + 7by = 0
3ax + 21ay + 0 = bx + 7by
3ax + 21ay = bx + 7by

Reorder the terms:
3ax + 21ay + -1bx + -7by = bx + -1bx + 7by + -7by

Combine like terms: bx + -1bx = 0
3ax + 21ay + -1bx + -7by = 0 + 7by + -7by
3ax + 21ay + -1bx + -7by = 7by + -7by

Combine like terms: 7by + -7by = 0
3ax + 21ay + -1bx + -7by = 0

The solution to this equation could not be determined.

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