bonsoir
x
x + 5
3 ( x + 5) = 3 x + 15
3 x + 15 + 4 = 3 x + 19
3 x + 19 - 3 x = 19
19 + 1 = 20
20
le programme donnera 20
2.5
2.5 + 5 = 7.5
7.5 * 3 = 22.5
22.5 + 4 = 26.5
26.5 - 7.5 = 19
10
10 + 5 = 15
15 * 3 = 45
45 +4 = 49
49 - 30 = 19
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bonsoir
x
x + 5
3 ( x + 5) = 3 x + 15
3 x + 15 + 4 = 3 x + 19
3 x + 19 - 3 x = 19
19 + 1 = 20
20
le programme donnera 20
2.5
2.5 + 5 = 7.5
7.5 * 3 = 22.5
22.5 + 4 = 26.5
26.5 - 7.5 = 19
19 + 1 = 20
10
10 + 5 = 15
15 * 3 = 45
45 +4 = 49
49 - 30 = 19
19 + 1 = 20
10+5=15
15*3=45
45+4=49
49-30=19
19+1=20