.8*(5x+15)=2.6*(x+3)

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Solution for .8*(5x+15)=2.6*(x+3) equation:


Simplifying
0.8(5x + 15) = 2.6(x + 3)

Reorder the terms:
0.8(15 + 5x) = 2.6(x + 3)
(15 * 0.8 + 5x * 0.8) = 2.6(x + 3)
(12 + 4x) = 2.6(x + 3)

Reorder the terms:
12 + 4x = 2.6(3 + x)
12 + 4x = (3 * 2.6 + x * 2.6)
12 + 4x = (7.8 + 2.6x)

Solving
12 + 4x = 7.8 + 2.6x

Solving for variable 'x'.

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

Add '-2.6x' to each side of the equation.
12 + 4x + -2.6x = 7.8 + 2.6x + -2.6x

Combine like terms: 4x + -2.6x = 1.4x
12 + 1.4x = 7.8 + 2.6x + -2.6x

Combine like terms: 2.6x + -2.6x = 0.0
12 + 1.4x = 7.8 + 0.0
12 + 1.4x = 7.8

Add '-12' to each side of the equation.
12 + -12 + 1.4x = 7.8 + -12

Combine like terms: 12 + -12 = 0
0 + 1.4x = 7.8 + -12
1.4x = 7.8 + -12

Combine like terms: 7.8 + -12 = -4.2
1.4x = -4.2

Divide each side by '1.4'.
x = -3

Simplifying
x = -3

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