Bonjour,
33)
a)
x= 2-3
x= -1
b)
x= 2+3
x= 5
c)
x= 2/3
d)
x= 2*3
34)
a)
2x= 1-3
2x= -2
x= -2/2
x= -1
b)
2x= 1+3
2x= 4
x= 4/2
x= 2
c)
2x+6 = 1
2x= 1-6
2x= -5
x= -5/2
d)
2x-6 = 1
2x= 1+6
2x= 7
x= 7/2
35)
a )
x= 1/6 +1
x= 1/6 +6/6
x= 7/6
b)
3x = 4/3 +2
4x= 4/3 +6/3
x = 10/3
c)
2x/5 = 4/5 -1
2x/5 = 4/5 -5/5
2x/5 = -1/5
2x = -1/5 *5
2x = -5/5
2x= -1
x= -1/2
d)
3x/7 = -8 -4
3x/7 = -12
3x = -12*7
3x= -84
x = -84/3
x= -28