arianaguerin
arianaguerin
18-10-2018
Mathematics
contestada
plz help me with this
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zayn1432
zayn1432
20-10-2018
2x-7y=18 _(1)
-2x+4y=5
11y=23 , Y=23/11 sub in 1
2x-7×23/11=18
2x = 18×11 + 7×23
x = ( 198 + 161 )/2 = 359/2
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