Пошаговое объяснение:
A)0.2(6r-5)=0.2*6r-5*0.2=1.2r-1
4(0.2x-2)=0.8x-8
1.2r-1-(0.8x-1)=1.2r-1-0.8x+1=1.2r-0.8x
B)0.4(1.5y+3)=2.5(3-0.6y)
0.6y+1.2=7.5-1.5y
2.1y=6.3
y=3
Пошаговое объяснение:
A)0.2(6r-5)=0.2*6r-5*0.2=1.2r-1
4(0.2x-2)=0.8x-8
1.2r-1-(0.8x-1)=1.2r-1-0.8x+1=1.2r-0.8x
B)0.4(1.5y+3)=2.5(3-0.6y)
0.6y+1.2=7.5-1.5y
2.1y=6.3
y=3