упростите выражение
2 (x+7)+4x , x=5
9(3-y)+15 ,y=2
1,5(y+9)+3,5 ,y=4
3/4(x-6)+2 , x=8
2 (x+7)+4x , x=5
9(3-y)+15 ,y=2
1,5(y+9)+3,5 ,y=4
3/4(x-6)+2 , x=8
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Answers & Comments
2x+14+4x=6x+14
30+14=44
2)9(3-y)+15,y=2
18-9y+15=3-9y
3-18=-15
3)1.5(y+9)+3.5,y=4
1.5y+13.5+3.5=1.5y+17
6+17=23
4)3/4(x-6)+2,x=8
3/4x-4.5+2=4x-2.5
32-2.5=29.5