Sagot :
A ) 2x = 6 + 3
2x= 9
donc 1x = 9/2 = 4,5
B) 9x -7x = -5 -3
2x = -8
donc 1x = -8/ 2 = -4 :)
coucou dm de maths s il vous plait
EQUATIONS :
a) 2x - 3 = 6
b)9x + 3 = 7 x - 5
A ) 2x = 6 + 3
2x= 9
donc 1x = 9/2 = 4,5
B) 9x -7x = -5 -3
2x = -8
donc 1x = -8/ 2 = -4 :)