Pls solve and do this for me.. question in the picture
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Pls solve and do this for me.. question in the picture
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2x + y +3 = 0
2x + y = 0 - 3
2x + y = 3
x + y = 3÷2
x = 3÷2 -y
above is 1 equation
put it in frst linear equation
so, 2[3÷2-y] + 3 = 0
2 is cancel out .
then, 3-y +3 =0
then find y 's value..