40x+50(20-x)=840

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Solution for 40x+50(20-x)=840 equation:


Simplifying
40x + 50(20 + -1x) = 840
40x + (20 * 50 + -1x * 50) = 840
40x + (1000 + -50x) = 840

Reorder the terms:
1000 + 40x + -50x = 840

Combine like terms: 40x + -50x = -10x
1000 + -10x = 840

Solving
1000 + -10x = 840

Solving for variable 'x'.

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

Add '-1000' to each side of the equation.
1000 + -1000 + -10x = 840 + -1000

Combine like terms: 1000 + -1000 = 0
0 + -10x = 840 + -1000
-10x = 840 + -1000

Combine like terms: 840 + -1000 = -160
-10x = -160

Divide each side by '-10'.
x = 16

Simplifying
x = 16

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