Bonsoir,
2x= 7-8
2x= -1
x = -1/2
4-15 = 8x
-11 =8x
x= -11/8
5x-3x = 5 -11
2x = -6
x= -6/2 =-3
4x+2x = 8+3
6x = 11
x = 11/6
a)
5x/3 = 4
5x = 4*3 =12
x = 12/5
b)
6x = 8+7 = 15
x = 15/6
c)
8-57 = 7x
-49 =7x
x = -49/7 = -7
d)
-11-4 = 7x-2x
-15 = 5x
x= -15/5 = -3
e)
6-15 = 4x +3x
-9 = 7x
x= -9/7