Sagot :
bonjour,
a - b = 7/3 - 10/21 = 49/21 - 10 /21 = 39/21 = 13 /7
ab = 7/3 * 10 /21 = 70/ 63 = 10 /9
2 a + b = 14/3 + 10/21 = 98 /21 + 10 /21 = 108 /21 = 36 /7
Bonjour,
A = 7/3 ; B = 10/21
a - b = 7/3 - 10/21
= 49/21 - 10/21
= 39/21 = 13/7
a x b = 7/3 * 10/21
= 70/63
= 10/9
2a + b = 2(7/3) + 10/21
= 14/3 + 10/21
= 98/21 + 10/21
= 108/21 = 36/7