-.45(40)+.8X=.3(40+X)

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Solution for -.45(40)+.8X=.3(40+X) equation:


Simplifying
-0.45(40) + 0.8X = 0.3(40 + X)

Multiply -0.45 * 40
-18 + 0.8X = 0.3(40 + X)
-18 + 0.8X = (40 * 0.3 + X * 0.3)
-18 + 0.8X = (12 + 0.3X)

Solving
-18 + 0.8X = 12 + 0.3X

Solving for variable 'X'.

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

Add '-0.3X' to each side of the equation.
-18 + 0.8X + -0.3X = 12 + 0.3X + -0.3X

Combine like terms: 0.8X + -0.3X = 0.5X
-18 + 0.5X = 12 + 0.3X + -0.3X

Combine like terms: 0.3X + -0.3X = 0.0
-18 + 0.5X = 12 + 0.0
-18 + 0.5X = 12

Add '18' to each side of the equation.
-18 + 18 + 0.5X = 12 + 18

Combine like terms: -18 + 18 = 0
0 + 0.5X = 12 + 18
0.5X = 12 + 18

Combine like terms: 12 + 18 = 30
0.5X = 30

Divide each side by '0.5'.
X = 60

Simplifying
X = 60

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