Bonjour,
Pouvez vous m’aidez pour mon exercice de maths svp?
Ex n•49
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Bonjour,
7
7*3/7 = 71/7 = 3
3+5 =8
8/(1/5) = 8*5 =40
28/15
28/15*3/7 = 84/105 = 28/35 = 7/5
7/5+5 = 7/5 +25/5 = 32/5
(32/5)/(1/5) = 32/5 *5 =160/5 = 32
x
3x/7
3x/7 +5
(3x/7 +5 )*5 = 0
15x/7 +25 =0
15x/7 = -25
15x = -25*7 = -175
x = -175/15 = - 35/3