.80x+.25(100)=.70(x+100)

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Solution for .80x+.25(100)=.70(x+100) equation:


Simplifying
0.80x + 0.25(100) = 0.70(x + 100)

Multiply 0.25 * 100
0.80x + 25 = 0.70(x + 100)

Reorder the terms:
25 + 0.80x = 0.70(x + 100)

Reorder the terms:
25 + 0.80x = 0.70(100 + x)
25 + 0.80x = (100 * 0.70 + x * 0.70)
25 + 0.80x = (70 + 0.70x)

Solving
25 + 0.80x = 70 + 0.70x

Solving for variable 'x'.

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

Add '-0.70x' to each side of the equation.
25 + 0.80x + -0.70x = 70 + 0.70x + -0.70x

Combine like terms: 0.80x + -0.70x = 0.1x
25 + 0.1x = 70 + 0.70x + -0.70x

Combine like terms: 0.70x + -0.70x = 0.00
25 + 0.1x = 70 + 0.00
25 + 0.1x = 70

Add '-25' to each side of the equation.
25 + -25 + 0.1x = 70 + -25

Combine like terms: 25 + -25 = 0
0 + 0.1x = 70 + -25
0.1x = 70 + -25

Combine like terms: 70 + -25 = 45
0.1x = 45

Divide each side by '0.1'.
x = 450

Simplifying
x = 450

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