.11x+.03(1400-x)=840

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Solution for .11x+.03(1400-x)=840 equation:


Simplifying
0.11x + 0.03(1400 + -1x) = 840
0.11x + (1400 * 0.03 + -1x * 0.03) = 840
0.11x + (42 + -0.03x) = 840

Reorder the terms:
42 + 0.11x + -0.03x = 840

Combine like terms: 0.11x + -0.03x = 0.08x
42 + 0.08x = 840

Solving
42 + 0.08x = 840

Solving for variable 'x'.

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

Add '-42' to each side of the equation.
42 + -42 + 0.08x = 840 + -42

Combine like terms: 42 + -42 = 0
0 + 0.08x = 840 + -42
0.08x = 840 + -42

Combine like terms: 840 + -42 = 798
0.08x = 798

Divide each side by '0.08'.
x = 9975

Simplifying
x = 9975

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