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Earn +20 ptsQ: 10x - 15x plus 5 equals -45 plus 40?
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What is 10x plus 40?
10x plus 40 is 50x.10+40=50 and then you just add the x so:10x+40=50x
Solve by the substitution method 15x-20y equals -1 15y equals 2 plus 5x?
Given: 15x - 20y = -1 15y = 2 + 5x Then: 15x -20(2 + 5x)/15 = -1 ∴15x -40/15 - 100x/15 = -15/15 ∴225x/15 - 100x/15 = 40/15 - 15/15 ∴125x = 25 ∴x = 1/5 Check: 15(1/5) - 20(1/5) = -1 ∴3 - 4 = -1 ∴-1 = -1
How do you solve 8 equals 10x divided by 10 plus x?
8 = 10x/(10 + x) Multiply both sides by (10 + x) to give: 8*(10+x) = 10x Simplify: 80 + 8x = 10x Subtract 8x from both sides: 80 = 2x Divide both sides by 2: 40 = x
What is 10y plus 40?
10y plus 40 equals 50y.
What duse 100 plus 40 plus 100 plus 40 equals?
280
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