(0.84*20)+(0.62*20)+(x*40)=80

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Solution for (0.84*20)+(0.62*20)+(x*40)=80 equation: 


Simplifying
(0.84 * 20) + (0.62 * 20) + (x * 40) = 80

Multiply 0.84 * 20
(16.8) + (0.62 * 20) + (x * 40) = 80
16.8 + (0.62 * 20) + (x * 40) = 80

Multiply 0.62 * 20
16.8 + (12.4) + (x * 40) = 80
16.8 + 12.4 + (x * 40) = 80

Reorder the terms for easier multiplication:
16.8 + 12.4 + (40x) = 80

Combine like terms: 16.8 + 12.4 = 29.2
29.2 + (40x) = 80

Solving
29.2 + (40x) = 80

Solving for variable 'x'.

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

Add '-29.2' to each side of the equation.
29.2 + -29.2 + (40x) = 80 + -29.2

Combine like terms: 29.2 + -29.2 = 0.0
0.0 + (40x) = 80 + -29.2
(40x) = 80 + -29.2

Combine like terms: 80 + -29.2 = 50.8
(40x) = 50.8

Divide each side by '40'.
x = 1.27

Simplifying
x = 1.27

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