Sagot :
bonjour
5 x /7 + 12 = 4 x /7 - 8
5 x /7 + 84/7 = 4 x /7 - 56/7
5 x - 4 x = - 56 - 84
x = - 140
Bonjour,
5/7x + 12 = 4/7x - 8
5/7x - 4/7x = - 8 - 12
1/7x = -20
x = -20 * 7 = -140
bonjour
5 x /7 + 12 = 4 x /7 - 8
5 x /7 + 84/7 = 4 x /7 - 56/7
5 x - 4 x = - 56 - 84
x = - 140
Bonjour,
5/7x + 12 = 4/7x - 8
5/7x - 4/7x = - 8 - 12
1/7x = -20
x = -20 * 7 = -140