0.5(5x+15)=2.1-(x+3)

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Solution for 0.5(5x+15)=2.1-(x+3) equation:


Simplifying
0.5(5x + 15) = 2.1 + -1(x + 3)

Reorder the terms:
0.5(15 + 5x) = 2.1 + -1(x + 3)
(15 * 0.5 + 5x * 0.5) = 2.1 + -1(x + 3)
(7.5 + 2.5x) = 2.1 + -1(x + 3)

Reorder the terms:
7.5 + 2.5x = 2.1 + -1(3 + x)
7.5 + 2.5x = 2.1 + (3 * -1 + x * -1)
7.5 + 2.5x = 2.1 + (-3 + -1x)

Combine like terms: 2.1 + -3 = -0.9
7.5 + 2.5x = -0.9 + -1x

Solving
7.5 + 2.5x = -0.9 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
7.5 + 2.5x + x = -0.9 + -1x + x

Combine like terms: 2.5x + x = 3.5x
7.5 + 3.5x = -0.9 + -1x + x

Combine like terms: -1x + x = 0
7.5 + 3.5x = -0.9 + 0
7.5 + 3.5x = -0.9

Add '-7.5' to each side of the equation.
7.5 + -7.5 + 3.5x = -0.9 + -7.5

Combine like terms: 7.5 + -7.5 = 0.0
0.0 + 3.5x = -0.9 + -7.5
3.5x = -0.9 + -7.5

Combine like terms: -0.9 + -7.5 = -8.4
3.5x = -8.4

Divide each side by '3.5'.
x = -2.4

Simplifying
x = -2.4

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