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

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


Simplifying
5a + -3(7 + -1a) = 3(5a + -4)
5a + (7 * -3 + -1a * -3) = 3(5a + -4)
5a + (-21 + 3a) = 3(5a + -4)

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

Combine like terms: 5a + 3a = 8a
-21 + 8a = 3(5a + -4)

Reorder the terms:
-21 + 8a = 3(-4 + 5a)
-21 + 8a = (-4 * 3 + 5a * 3)
-21 + 8a = (-12 + 15a)

Solving
-21 + 8a = -12 + 15a

Solving for variable 'a'.

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

Add '-15a' to each side of the equation.
-21 + 8a + -15a = -12 + 15a + -15a

Combine like terms: 8a + -15a = -7a
-21 + -7a = -12 + 15a + -15a

Combine like terms: 15a + -15a = 0
-21 + -7a = -12 + 0
-21 + -7a = -12

Add '21' to each side of the equation.
-21 + 21 + -7a = -12 + 21

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

Combine like terms: -12 + 21 = 9
-7a = 9

Divide each side by '-7'.
a = -1.285714286

Simplifying
a = -1.285714286

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