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Maths Puzzle
Algebra
Solve for x: 
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how does -2x+4(-2x-2)=-1+4(x-1) come out to equal -13/2? if you could please send a detailed step by step way that this question is solved.
thank you If Sara can paint a house in 4 hours, and John can paint the same house in 6 hours, how long will it take for both of them working together to paint the same house.
thank you If Sara can paint a house in 4 hours, and John can paint the same house in 6 hours, how long will it take for both of them working together to paint the same house.