1.5x-2.1(-2x+3)=4.2x+0.3(x+9)

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Solution for 1.5x-2.1(-2x+3)=4.2x+0.3(x+9) equation:


Simplifying
1.5x + -2.1(-2x + 3) = 4.2x + 0.3(x + 9)

Reorder the terms:
1.5x + -2.1(3 + -2x) = 4.2x + 0.3(x + 9)
1.5x + (3 * -2.1 + -2x * -2.1) = 4.2x + 0.3(x + 9)
1.5x + (-6.3 + 4.2x) = 4.2x + 0.3(x + 9)

Reorder the terms:
-6.3 + 1.5x + 4.2x = 4.2x + 0.3(x + 9)

Combine like terms: 1.5x + 4.2x = 5.7x
-6.3 + 5.7x = 4.2x + 0.3(x + 9)

Reorder the terms:
-6.3 + 5.7x = 4.2x + 0.3(9 + x)
-6.3 + 5.7x = 4.2x + (9 * 0.3 + x * 0.3)
-6.3 + 5.7x = 4.2x + (2.7 + 0.3x)

Reorder the terms:
-6.3 + 5.7x = 2.7 + 4.2x + 0.3x

Combine like terms: 4.2x + 0.3x = 4.5x
-6.3 + 5.7x = 2.7 + 4.5x

Solving
-6.3 + 5.7x = 2.7 + 4.5x

Solving for variable 'x'.

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

Add '-4.5x' to each side of the equation.
-6.3 + 5.7x + -4.5x = 2.7 + 4.5x + -4.5x

Combine like terms: 5.7x + -4.5x = 1.2x
-6.3 + 1.2x = 2.7 + 4.5x + -4.5x

Combine like terms: 4.5x + -4.5x = 0.0
-6.3 + 1.2x = 2.7 + 0.0
-6.3 + 1.2x = 2.7

Add '6.3' to each side of the equation.
-6.3 + 6.3 + 1.2x = 2.7 + 6.3

Combine like terms: -6.3 + 6.3 = 0.0
0.0 + 1.2x = 2.7 + 6.3
1.2x = 2.7 + 6.3

Combine like terms: 2.7 + 6.3 = 9
1.2x = 9

Divide each side by '1.2'.
x = 7.5

Simplifying
x = 7.5

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