Pouvez-vous m'aider à résoudre ses équations :
a) 15x=100 f) 8-7x=15
b) -5x=755 g) 25+5x=9x+32
c) -12x= -84 h) 8-7x=25+5x
d) 9x= -1233
e) 15+4x = 9
a) 15x=100 f) 8-7x=15
b) -5x=755 g) 25+5x=9x+32
c) -12x= -84 h) 8-7x=25+5x
d) 9x= -1233
e) 15+4x = 9
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Verified answer
a) 15x=100
x =100/15
x = 20/3
f) 8-7x=15
-7x = 15-8
-7x = 7
x= 7/-7
x = -1
b) -5x=755
x= 755/ -5
x = -151
g) 25+5x=9x+32
5x-9x = 32-25
-4x = 7
x = -7/4
c) -12x= -84
x = -84/-12
x= 7
h) 8-7x=25+5x
-7x-5x = 25 -8
-12x = 17
x = -12/17
d) 9x= -1233
x= -1233/9
x = -137
e) 15+4x = 9
4x = 9-15
4x = -6
x = -6/4
x= -3/2
x = 100/15
x = 20/3
f) 8-7x=15
- 7x = 15 - 8
- 7x = 7
x = - 7/7
x = - 1
b) -5x=755
x = - 755/5
x = - 151
g) 25+5x=9x+32
5x - 9x = 32 - 25
- 4x = 7
x = - 7/4
x = - 1,75
c) -12x= -84
x = 84/12
x = 7
h) 8-7x=25+5x
- 7x - 5x = 25 - 8
- 12x = 17
x = - 17/12
d) 9x= -1233
x = - 1233/9
x = - 137
e) 15+4x = 9
4x = 9 - 15
4x = - 6
x = - 6/4
x = - 3/2
x = - 1,5