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OpenStudy (anonymous):
When using substitution to solve the system below, which expression can be substituted into the second equation for y. 4x+y=3 and 2x+3y=4 a. 4-2x/3 b. 3-4x c. 4-2x
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OpenStudy (kropot72):
Can you rearrange the first equation to find an expression for y ?
OpenStudy (anonymous):
idk how.
OpenStudy (kropot72):
4x + y = 3 What do you get when you subtract 4x from both sides of this equation?
OpenStudy (anonymous):
0+y=-1
OpenStudy (kropot72):
4x + y = 3 Subtractin 4x from both sides gives 4x - 4x + y = 3 - 4x Can you find an expression for y now?
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OpenStudy (anonymous):
3 ?
OpenStudy (kropot72):
4x - 4x + y = 0 + y = y = 3 - 4x y = 3 - 4x
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