0.07*(1+3+x)=0.8

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Solution for 0.07*(1+3+x)=0.8 equation: 


Simplifying
0.07(1 + 3 + x) = 0.8

Combine like terms: 1 + 3 = 4
0.07(4 + x) = 0.8
(4 * 0.07 + x * 0.07) = 0.8
(0.28 + 0.07x) = 0.8

Solving
0.28 + 0.07x = 0.8

Solving for variable 'x'.

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

Add '-0.28' to each side of the equation.
0.28 + -0.28 + 0.07x = 0.8 + -0.28

Combine like terms: 0.28 + -0.28 = 0.00
0.00 + 0.07x = 0.8 + -0.28
0.07x = 0.8 + -0.28

Combine like terms: 0.8 + -0.28 = 0.52
0.07x = 0.52

Divide each side by '0.07'.
x = 7.428571429

Simplifying
x = 7.428571429

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