Question

3x + 4y = 15. and 7x - 2y = 1 how to solve it by elimination​

Answer 1

Answer:

3x + 4y = 15

+ 2 (7x) - 2(2y)= +2(1)

=> 3x +14x +4y-4y = 15+2

=> 17x =17

so x=1

and substituting x=1 we get y

3x + 4y=15

3(1)+ 4y= 15

4y= 15-3

4y=12

so y=3

therefore x=1 and y=3

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