a) x = 31 + 5
x = 36
b) x = 18 - 7
x = 11
c) x = 2,08 - 1,3
x = 0,78
d) x = 1/5 - 2/3
x = 3/15 - 10/15
x = - 7/15
e) x = 2 1/3 + 1 3/5
x = 7/3 + 8/5
x = 35/15 + 24/15
x = 54/15
x = 3 9/15
Odpowiedź:
x-5=31
x=31+5
x=36
b x+7=18
x=18-7
x=11
c x+1, 3=2, 08
x=2, 08-1, 3
x=0, 78
d x-2/3=1/5
x=1/5+2/3
x=3/15+10/15
x=13/15
e x-1 3/5= 2 1/3
x= 2 1/3+1 3/5
x=2 5/15+1 9/15
x= 3 14/15
f x+2,7=4 1/3
x= 4 1/3 + 2 7/10
x= 4 10/30+ 2 21/30
x= 6 31/30
x= 7 1/30
