Sagot :
Bonsoir,
a)
3 + 4(2x-1) = 3(x+5) - 2
3+ 8x -4 = 3x +15 -2
8x - 3x = 15 -2 -3 +4
5x = 14
x= 14/5 = 2,8
b)
-3 -7(2x+2) = 4 (-1 -x)
-3 -14x -14 = -4 -4x
-3-14 +4 = -4x +14x
-13 =10x
x = -13/10 = -1,3
Bonsoir,
a)
3 + 4(2x-1) = 3(x+5) - 2
3+ 8x -4 = 3x +15 -2
8x - 3x = 15 -2 -3 +4
5x = 14
x= 14/5 = 2,8
b)
-3 -7(2x+2) = 4 (-1 -x)
-3 -14x -14 = -4 -4x
-3-14 +4 = -4x +14x
-13 =10x
x = -13/10 = -1,3