Răspuns :
a) x=35,8-5,6
x = 30,2
b) x=25,4+13,2
x = 38,6
c) 13,1x *1,2 = 78,6
15,72x = 78,6
1572/100x = 786/10
x = 786/10 * 100/1572
x = 10/2 = 5
a) x=35,8-5,6
x = 30,2
b) x=25,4+13,2
x = 38,6
c) 13,1x *1,2 = 78,6
15,72x = 78,6
1572/100x = 786/10
x = 786/10 * 100/1572
x = 10/2 = 5