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Mathematics 8 Online
OpenStudy (anonymous):

How do I solve using substitution? Y=0.5x+2, -y=-2x+4

OpenStudy (callisto):

Y=0.5x+2 --- (1) -y=-2x+4 --- (2) Sub. (1) into (2) (that is to replace y by 0.5x+2 in the second equation) - (0.5x+2) = -2x+4 Do you understand now?

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