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Mathematics 19 Online
OpenStudy (anonymous):

use the method of substitution to solve the system 2x-y = 4 9x-4y= 18

OpenStudy (whpalmer4):

Solve the first equation for y in terms of x. Wherever you see y in the second equation, put in the expression you found for y. Solve that for x. When you have done so, take the value of x and plug it into the expression you found for y in terms of x to get the value of y.

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