Пошаговое объяснение:
25p-49=R
12p+68=R
12p=R-68
25p=R+49
p=(R+49)/25
p=0.04R+1.96
12*(0.04R+1.96)=R-68
0.48R+23.52=R-68
0.48R-R=-68-23.52
-0.52R=-91.52
R=-91.52/(-0.52)
R=176
p=0.04*176+1.96=9
Пошаговое объяснение:
25p-49=R
12p+68=R
12p=R-68
25p=R+49
p=(R+49)/25
p=0.04R+1.96
12*(0.04R+1.96)=R-68
0.48R+23.52=R-68
0.48R-R=-68-23.52
-0.52R=-91.52
R=-91.52/(-0.52)
R=176
p=0.04*176+1.96=9