Odpowiedź :
a) x + 8 = 13
x = 13 - 8 = 5
x = 5
b) - 4 x = 32
- + - = +
32 : 4 = 8
- (- 8) * 4 = 32
c) ?
d) 3 x - 8 = 2
8 + 2 = 10
10 : 3 = 3 1/3
x = 3 1/3
e) 5 - 2x = 3
5 - 3 = 2
2 : 2 = 1
x = 1
?
x = 13 - 8 = 5
x = 5
b) - 4 x = 32
- + - = +
32 : 4 = 8
- (- 8) * 4 = 32
c) ?
d) 3 x - 8 = 2
8 + 2 = 10
10 : 3 = 3 1/3
x = 3 1/3
e) 5 - 2x = 3
5 - 3 = 2
2 : 2 = 1
x = 1
?