x-(4a-7)=5x-(x+21)

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Solution for x-(4a-7)=5x-(x+21) equation:


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

Reorder the terms:
x + -1(-7 + 4a) = 5x + -1(x + 21)
x + (-7 * -1 + 4a * -1) = 5x + -1(x + 21)
x + (7 + -4a) = 5x + -1(x + 21)

Reorder the terms:
7 + -4a + x = 5x + -1(x + 21)

Reorder the terms:
7 + -4a + x = 5x + -1(21 + x)
7 + -4a + x = 5x + (21 * -1 + x * -1)
7 + -4a + x = 5x + (-21 + -1x)

Reorder the terms:
7 + -4a + x = -21 + 5x + -1x

Combine like terms: 5x + -1x = 4x
7 + -4a + x = -21 + 4x

Solving
7 + -4a + x = -21 + 4x

Solving for variable 'a'.

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

Add '-7' to each side of the equation.
7 + -4a + -7 + x = -21 + -7 + 4x

Reorder the terms:
7 + -7 + -4a + x = -21 + -7 + 4x

Combine like terms: 7 + -7 = 0
0 + -4a + x = -21 + -7 + 4x
-4a + x = -21 + -7 + 4x

Combine like terms: -21 + -7 = -28
-4a + x = -28 + 4x

Add '-1x' to each side of the equation.
-4a + x + -1x = -28 + 4x + -1x

Combine like terms: x + -1x = 0
-4a + 0 = -28 + 4x + -1x
-4a = -28 + 4x + -1x

Combine like terms: 4x + -1x = 3x
-4a = -28 + 3x

Divide each side by '-4'.
a = 7 + -0.75x

Simplifying
a = 7 + -0.75x

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