Решите-плиз,очень-нужно)). Created by DaRiA555S. algebra-ru

Решите-плиз,очень-нужно))...

July 2022 1 6 Report

Решите-плиз,очень-нужно))

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Flash3146 #1
y=-8x
2x+0,5y=1
2x+0,5(-8x)=1
2x-4x=1
-2x=1:(-2)
x=-0,5
y=-0,5*(-8)
y=4
#2
-x-4y=-5
2x+7y=7
-4y=-5+x:(-4)
y=1,25-0,25x
2x+7(1,25-0,25x)=7
2x+8,75-1,75x=7
0,25x=7-8,75
0,25x=-1,75:0,25
x=-7
-(-7)-4y=-5
-4y=-5-7
-4y=-12:(-4)
y=3

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