100*6.8=30*x+20*5.25+50*6.4

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Solution for 100*6.8=30*x+20*5.25+50*6.4 equation:


Simplifying
100 * 6.8 = 30x + 20 * 5.25 + 50 * 6.4

Multiply 100 * 6.8
680 = 30x + 20 * 5.25 + 50 * 6.4

Multiply 20 * 5.25
680 = 30x + 105 + 50 * 6.4

Multiply 50 * 6.4
680 = 30x + 105 + 320

Reorder the terms:
680 = 105 + 320 + 30x

Combine like terms: 105 + 320 = 425
680 = 425 + 30x

Solving
680 = 425 + 30x

Solving for variable 'x'.

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

Add '-30x' to each side of the equation.
680 + -30x = 425 + 30x + -30x

Combine like terms: 30x + -30x = 0
680 + -30x = 425 + 0
680 + -30x = 425

Add '-680' to each side of the equation.
680 + -680 + -30x = 425 + -680

Combine like terms: 680 + -680 = 0
0 + -30x = 425 + -680
-30x = 425 + -680

Combine like terms: 425 + -680 = -255
-30x = -255

Divide each side by '-30'.
x = 8.5

Simplifying
x = 8.5

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