x+0.7(10-x)=7.9

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Solution for x+0.7(10-x)=7.9 equation:


Simplifying
x + 0.7(10 + -1x) = 7.9
x + (10 * 0.7 + -1x * 0.7) = 7.9
x + (7 + -0.7x) = 7.9

Reorder the terms:
7 + x + -0.7x = 7.9

Combine like terms: x + -0.7x = 0.3x
7 + 0.3x = 7.9

Solving
7 + 0.3x = 7.9

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 0.3x = 7.9 + -7

Combine like terms: 7 + -7 = 0
0 + 0.3x = 7.9 + -7
0.3x = 7.9 + -7

Combine like terms: 7.9 + -7 = 0.9
0.3x = 0.9

Divide each side by '0.3'.
x = 3

Simplifying
x = 3

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