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(1) The number of items on two grocery lists differs by 7. (2) The total number of items is 33. How many items are on each list?
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list 1 = x items list 2= (x+7) items total items on both lists = 33 can you proceed from here?
You can set this up as a simple system of equations. If one grocery list is 'x' and one is 'y' then: x-y = 7 x+y = 33
@qpHalcy0n you're also correct, but why use two unknowns when you can set up with one?
i need a little more help
You don't necessarily have to solve the system as such. Solve for either variable in one and just subtract from 33.
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@ rayleigh: list 1 +list 2 = 33 x + (x+7)=33 2x +7 =33 2x = 26 x = 13 ........list 1 x+7 = 13+7 = 20........list 2
thank you!
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