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Earn +20 ptsQ: What is 9r-4s over 9r plus 6s?
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-9r equals 20 plus r?
-9r = 20 + rsubtract r from both sides-10r = 20divide both sides by -10r = -2
What is 8 minus the product of 9 and r?
If we assume that "r" is unknown: -9r+8 or 8-9r It cannot be simplified further.
What is the solution for 3r - 9r equals 18?
3r - 9r = 18 wright equaton -6r = 18 combine like terms r = -3 solve
What is r plus 8r?
9r-- think of the 'r' as '1r' and add like you normally would.
3r plus 18 divided by 12 equals 4r - 48 divided by 4?
(3r + 18)/12 = (4r - 48)/4Multiply both sides by 12: (3r + 18) = 3*(4r - 48)or: 3r + 18 = 12r - 144Subtract 3r from both sides: 18 = 9r - 144Add 144 to both sides: 162 = 9rDivide both sides by 9: 18 = rAnswer: r = 18
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