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Sagot :
a =7x-14 = 7*5 -14 = 35-14 = 21
b
24+4x = 24+4*5 = 24+20 = 44
c
5(x+3)
5(5+3)
5*8=40
d = 9(x-4=
d = 9 (5-4)
d = 9(1)
d = 9
donc tu as raisons
b
24+4x = 24+4*5 = 24+20 = 44
c
5(x+3)
5(5+3)
5*8=40
d = 9(x-4=
d = 9 (5-4)
d = 9(1)
d = 9
donc tu as raisons
A = 7x-14
7x = 14
x = 14/7
x = 2
Si x = 5
A = 7x - 14
A = 7 * 5 + 14
A = 35 + 14
A = 49
B = 24 + 4x
4x = - 24
x = - 24/6
x = - 6
Si x = 5
B = 24 + 4x
B = 24 + 4 * 5
B = 24 + 20
B = 44
C = 5(x + 3)
C = 5x + 15
5x = - 15
x = - 15/5
x = - 3
Si x = 5
C = 5 (x + 3)
C = 5 (5 + 3)
C = 25 + 15
C = 40
D = 9 (x - 4)
D = 9x - 36
9x = 36
x = 36/9
x = 4
Si x = 5
D = 9 (x - 4)
D = 9 (5 - 4)
D = 45 - 36
D = 9
A = 7 * 5 - 14 = 35 - 14 = 21
A = 35 - 14 = 35 - 14 = 21
A = 21 = 21 = 21
B = 24 + 4 * 5 = 24 + 20 = 44
B = 24 + 20 = 24 + 20 = 44
B = 44 = 44 = 44
C = 5 (5 + 3) = 40
C = 25 + 15 = 40
C = 40 = 40
D = 9 (5 - 4) = 9
D = 45 - 36 = 9
D = 9 = 9
7x = 14
x = 14/7
x = 2
Si x = 5
A = 7x - 14
A = 7 * 5 + 14
A = 35 + 14
A = 49
B = 24 + 4x
4x = - 24
x = - 24/6
x = - 6
Si x = 5
B = 24 + 4x
B = 24 + 4 * 5
B = 24 + 20
B = 44
C = 5(x + 3)
C = 5x + 15
5x = - 15
x = - 15/5
x = - 3
Si x = 5
C = 5 (x + 3)
C = 5 (5 + 3)
C = 25 + 15
C = 40
D = 9 (x - 4)
D = 9x - 36
9x = 36
x = 36/9
x = 4
Si x = 5
D = 9 (x - 4)
D = 9 (5 - 4)
D = 45 - 36
D = 9
A = 7 * 5 - 14 = 35 - 14 = 21
A = 35 - 14 = 35 - 14 = 21
A = 21 = 21 = 21
B = 24 + 4 * 5 = 24 + 20 = 44
B = 24 + 20 = 24 + 20 = 44
B = 44 = 44 = 44
C = 5 (5 + 3) = 40
C = 25 + 15 = 40
C = 40 = 40
D = 9 (5 - 4) = 9
D = 45 - 36 = 9
D = 9 = 9
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