1.

3x+4y=7 2x+y=-2elimnation

Answer»

3x+4y=7 ---------(1)

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

By MULTIPLYING 4 in EQUN. (2)

4(2x+y=-2)

8x+4y=-8 ---------(3)

By substracting equn. (1) from equn (3)

8x+4y=-2

-3x-4y=-7

_________

5x. =-9

x=-9/5



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