0.8+5*0.2+8*0.2+x*0.5=7.0

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Solution for 0.8+5*0.2+8*0.2+x*0.5=7.0 equation: 


Simplifying
0.8 + 5 * 0.2 + 8 * 0.2 + x * 0.5 = 7.0

Multiply 5 * 0.2
0.8 + 1 + 8 * 0.2 + x * 0.5 = 7.0

Multiply 8 * 0.2
0.8 + 1 + 1.6 + x * 0.5 = 7.0

Reorder the terms for easier multiplication:
0.8 + 1 + 1.6 + 0.5x = 7.0

Combine like terms: 0.8 + 1 = 1.8
1.8 + 1.6 + 0.5x = 7.0

Combine like terms: 1.8 + 1.6 = 3.4
3.4 + 0.5x = 7.0

Solving
3.4 + 0.5x = 7.0

Solving for variable 'x'.

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

Add '-3.4' to each side of the equation.
3.4 + -3.4 + 0.5x = 7.0 + -3.4

Combine like terms: 3.4 + -3.4 = 0.0
0.0 + 0.5x = 7.0 + -3.4
0.5x = 7.0 + -3.4

Combine like terms: 7.0 + -3.4 = 3.6
0.5x = 3.6

Divide each side by '0.5'.
x = 7.2

Simplifying
x = 7.2

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