0.30x+0.90(400)=0.40(x+400)

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Solution for 0.30x+0.90(400)=0.40(x+400) equation:


Simplifying
0.30x + 0.90(400) = 0.40(x + 400)

Multiply 0.90 * 400
0.30x + 360 = 0.40(x + 400)

Reorder the terms:
360 + 0.30x = 0.40(x + 400)

Reorder the terms:
360 + 0.30x = 0.40(400 + x)
360 + 0.30x = (400 * 0.40 + x * 0.40)
360 + 0.30x = (160 + 0.40x)

Solving
360 + 0.30x = 160 + 0.40x

Solving for variable 'x'.

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

Add '-0.40x' to each side of the equation.
360 + 0.30x + -0.40x = 160 + 0.40x + -0.40x

Combine like terms: 0.30x + -0.40x = -0.1x
360 + -0.1x = 160 + 0.40x + -0.40x

Combine like terms: 0.40x + -0.40x = 0.00
360 + -0.1x = 160 + 0.00
360 + -0.1x = 160

Add '-360' to each side of the equation.
360 + -360 + -0.1x = 160 + -360

Combine like terms: 360 + -360 = 0
0 + -0.1x = 160 + -360
-0.1x = 160 + -360

Combine like terms: 160 + -360 = -200
-0.1x = -200

Divide each side by '-0.1'.
x = 2000

Simplifying
x = 2000

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