Question

simultaneous equations 2x+3y=12;x-y=1

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Answer 1

x=y+1(x-y=1)

Putting the value of x in the first equation

2(y+1)+3y=12

2y+2+3y=12

5y+2=12

5y=12-2

5y=10

y=10/5=>2

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Answer 2

Answer:

solve the following simultaneous equations graphically. 2x+3y=12; x-y=1