0.4(x+3)=0.04(3x+40)

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Solution for 0.4(x+3)=0.04(3x+40) equation:


Simplifying
0.4(x + 3) = 0.04(3x + 40)

Reorder the terms:
0.4(3 + x) = 0.04(3x + 40)
(3 * 0.4 + x * 0.4) = 0.04(3x + 40)
(1.2 + 0.4x) = 0.04(3x + 40)

Reorder the terms:
1.2 + 0.4x = 0.04(40 + 3x)
1.2 + 0.4x = (40 * 0.04 + 3x * 0.04)
1.2 + 0.4x = (1.6 + 0.12x)

Solving
1.2 + 0.4x = 1.6 + 0.12x

Solving for variable 'x'.

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

Add '-0.12x' to each side of the equation.
1.2 + 0.4x + -0.12x = 1.6 + 0.12x + -0.12x

Combine like terms: 0.4x + -0.12x = 0.28x
1.2 + 0.28x = 1.6 + 0.12x + -0.12x

Combine like terms: 0.12x + -0.12x = 0.00
1.2 + 0.28x = 1.6 + 0.00
1.2 + 0.28x = 1.6

Add '-1.2' to each side of the equation.
1.2 + -1.2 + 0.28x = 1.6 + -1.2

Combine like terms: 1.2 + -1.2 = 0.0
0.0 + 0.28x = 1.6 + -1.2
0.28x = 1.6 + -1.2

Combine like terms: 1.6 + -1.2 = 0.4
0.28x = 0.4

Divide each side by '0.28'.
x = 1.428571429

Simplifying
x = 1.428571429

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