If you mean: 3y^2-7y+3-5y+3-4y^2 then it is simplified to -y^2-12y+6
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4y + 3 >= -94y >= -9 + -34y >= -12y >= -12/4y >= -3
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x + y = 57x - y = 11Add: 2x = 68x = 34y = 57 - x = 23Check: 34 - 23 ?=? 11 ? Yes. yay !
oranges x apples y 5x+2y=72 1x+4y=48make it so that either the x value or the y value are the same2(5x+2y)=2(72)1x+4y=48here you can see how the y's are now the same10x+4y=1441x+4y=48subtract the bottom equation from the top one9x=96divide9x/9=96/9x=10 2/3substitute 10 2/3 for x in either of the original equations1x+4y=481(10 2/3)+4y=4810 2/3+4y=48subtract4y=48-10 2/34y=37 1/3divide4y/4=(37 1/3)/4y=9 1/3therefor, x is 10 2/3 y is 9 1/3money-wise, the oranges (x) are $10.67 and the apples (y) are $9.33