Question

Rozwiąż równania:

a) 17 = 0,85x
b) 1,1u = 13

Answer 1

17=0,85x/:0,85
x=17:0,85
x=17 : 85/100
x=17 * 100/85
x=1700/85
x=20


1,1u=13/:1,1
u=13 : 1,1
u=13:11/10
u=13 * 10/11
u=130/11
u=

Answer 2

A)
0,85x = 17      |:0,85
x = 20

b)
1,1u = 13     |:0,1
11u = 130    |:11
u = 130/11
u = 11 całych i 9/11