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Mathematics 8 Online
OpenStudy (anonymous):

Solve the system of equations using substitution. y = 2x + 9 y = 3x + 10

mathslover (mathslover):

From first equation, you're given with y = 2x + 9 Plug-in the value of y in second equation. You get: 2x + 9 = 3x + 10 Now solve for x and then solve for y by using any of the 2 original equations.

OpenStudy (anonymous):

not sure i understand

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