Question

Prosze o rozwiazanie. Równania i nie równości
X+2(x+1)=3
B 2x+4(x+3)=3(x-2)
C 2(x+1)-3(x+3)=0
D 3(x+2)=6
E x+1-3(x+2)=6
F 2(x+1)-3(x-1)=3

Answer 1

A
x+2(x+1)= 3
x+ 2x + 2 = 3
3x = 3-2
3x = -1
x= -1/3

B
2x + 4(x+3) = 3(x-2)
2x + 4x + 12 = 3x - 6
2x + 4x - 3x = -6 -12
5x = - 18
x =-18/5 =  - 3 3/5

C
2(x+1) - 3(x+3) = 0
2x + 2 - 3x - 9 = 0
-1x = 9 - 2
-x= 7
x= -7

D
3(x+2) = 6
3x + 6 = 6
3x = 0
x = 0

E
x + 1 - 3(x+2) = 6
x + 1 - 3x - 6 = 6
-2x=6+ 6 - 1
-2x= 11
x = -11/2 = -5 1/2

F
2(x+1) - 3(x-1) = 3
2x +2 - 3x + 3 = 3
-x = -3 - 3 -2
-x = -8
x=8