3 years ago

2x+3y=9 2x+y=7 simultaneous equation

Mathematics

1 answer:

Marat540 [252]3 years ago

3 0

Answer:

x=3 and y=1

Step-by-step explanation:

subtract equation 2 from 1

then (2x+3y) -(2x+y) =9-7

2x-2x+3y-y =2

2y=2 therefore y=1

substitute y value in 2x+y=7

2x+1=7

2x=7-1

2x=6

x=3

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