bonjour,
A.x+7=3
x = 3 - 7
x = - 4
B.x+7=-3
x = - 3 - 7
x = - 10
C.x-7=3
x = 3 + 7
x = 10
D.x-7=-3
x = - 3 + 7
x = 4
E.4x=8
x = 2
F.8x=4
x = 4/8 = 1 /2
G.x/8=4
x = 32
H.x/4 =1/8
8 x = 4
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bonjour,
A.x+7=3
x = 3 - 7
x = - 4
B.x+7=-3
x = - 3 - 7
x = - 10
C.x-7=3
x = 3 + 7
x = 10
D.x-7=-3
x = - 3 + 7
x = 4
E.4x=8
x = 2
F.8x=4
x = 4/8 = 1 /2
G.x/8=4
x = 32
H.x/4 =1/8
8 x = 4
x = 4/8 = 1 /2