solve the following simultaneously by equation 3x-y=7----1. x+y=11-----2
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multiply 3 in equation 2
Step-by-step explanation:
3×x+y=11
3x+3y=33-‐----3
equation 1-3
3x-y=7
-3x-3y=-33
‐--------------
-4y= -26
4y=26
y=26/4
y=6.5
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