a)15z+24=-5z-5 b)-21-3s=17-12s c)18-8y=5y-9 d)-34+13x-34
źródło:
a) 15z+24=-5z-5 15z+5z= -5-24 20z = -29 z= -29/20= -1,45
b) -21-3s=17-12s -3s+12s =17+21 9s=38 x= 38/9 s= 4 i2/9
c) 18-8y=5y-9 -8y-5y= -9-18 -13y= -27 y= 27/13 y= 2 i 1/13
d)-34+13x-34 13x= 68 x=68/13 x=5 i 3/13
a 15z+5z=-5-24 20z=-29/20 z=-1 9/20 b -3s+12s=17+21 9s=38/9 s=4 2/9 c -8y-5y=-9-18 -13y=27/-13 y=2 1/13