3(a+7)-5a=7-2(a-4)

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Solution for 3(a+7)-5a=7-2(a-4) equation:


Simplifying
3(a + 7) + -5a = 7 + -2(a + -4)

Reorder the terms:
3(7 + a) + -5a = 7 + -2(a + -4)
(7 * 3 + a * 3) + -5a = 7 + -2(a + -4)
(21 + 3a) + -5a = 7 + -2(a + -4)

Combine like terms: 3a + -5a = -2a
21 + -2a = 7 + -2(a + -4)

Reorder the terms:
21 + -2a = 7 + -2(-4 + a)
21 + -2a = 7 + (-4 * -2 + a * -2)
21 + -2a = 7 + (8 + -2a)

Combine like terms: 7 + 8 = 15
21 + -2a = 15 + -2a

Add '2a' to each side of the equation.
21 + -2a + 2a = 15 + -2a + 2a

Combine like terms: -2a + 2a = 0
21 + 0 = 15 + -2a + 2a
21 = 15 + -2a + 2a

Combine like terms: -2a + 2a = 0
21 = 15 + 0
21 = 15

Solving
21 = 15

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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