28(x-7)+21(2x-1)=12(x+3.2)

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Solution for 28(x-7)+21(2x-1)=12(x+3.2) equation:


Simplifying
28(x + -7) + 21(2x + -1) = 12(x + 3.2)

Reorder the terms:
28(-7 + x) + 21(2x + -1) = 12(x + 3.2)
(-7 * 28 + x * 28) + 21(2x + -1) = 12(x + 3.2)
(-196 + 28x) + 21(2x + -1) = 12(x + 3.2)

Reorder the terms:
-196 + 28x + 21(-1 + 2x) = 12(x + 3.2)
-196 + 28x + (-1 * 21 + 2x * 21) = 12(x + 3.2)
-196 + 28x + (-21 + 42x) = 12(x + 3.2)

Reorder the terms:
-196 + -21 + 28x + 42x = 12(x + 3.2)

Combine like terms: -196 + -21 = -217
-217 + 28x + 42x = 12(x + 3.2)

Combine like terms: 28x + 42x = 70x
-217 + 70x = 12(x + 3.2)

Reorder the terms:
-217 + 70x = 12(3.2 + x)
-217 + 70x = (3.2 * 12 + x * 12)
-217 + 70x = (38.4 + 12x)

Solving
-217 + 70x = 38.4 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
-217 + 70x + -12x = 38.4 + 12x + -12x

Combine like terms: 70x + -12x = 58x
-217 + 58x = 38.4 + 12x + -12x

Combine like terms: 12x + -12x = 0
-217 + 58x = 38.4 + 0
-217 + 58x = 38.4

Add '217' to each side of the equation.
-217 + 217 + 58x = 38.4 + 217

Combine like terms: -217 + 217 = 0
0 + 58x = 38.4 + 217
58x = 38.4 + 217

Combine like terms: 38.4 + 217 = 255.4
58x = 255.4

Divide each side by '58'.
x = 4.403448276

Simplifying
x = 4.403448276

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