Odpowiedź :
-5x + 10 = -2x – 8
-3x=-18
x=6
7x + 2 = 5 + 3x + 9
4x=12
x=3
–(x + 3) + (2x – 1) = (1 + 4x) + (3 + x)
-x-3+2x-1=1+4x+3+x
x-4=5x+4
4x=-8
x=-2
–( x + 3) – (2x + 8) = (-3 – 2x) + (2x + 1)
-x-3-2x-8=-3-2x+2x +1
-3x-11=-2
-3x=9
x= -3
2(x + 4) – 5(x + 3) = 2
2x+8-5x-15=2
-3x-7=2
-3x= 9
x=-3
3(x – 4) – 4(2x – 7) = 2x + 2
3x-12-8x+28=2x+2
-5x+16=2x+2
-7x=-14
x=2
Odpowiedź:
-5x + 10 = -2x – 8
10+8=5x-2x
18=3x
x=18/3
x=6
7x + 2 = 5 + 3x + 9
7x-3x=5+9-2
4x=12
x=3
–(x + 3) + (2x – 1) = (1 + 4x) + (3 + x)
-x-3+2x-1=1+4x+3+x
-3-1-1-3=x-2x+4x+x
4x=-8
x=-2
–( x + 3) – (2x + 8) = (-3 – 2x) + (2x + 1)
-x-3-2x-8=-3-2x+2x+1
-x-2x+2x+2x=3+8-3+1
x=9
2(x + 4) – 5(x + 3) = 2
2x+8-5x-15=2
2x-5x=15-8+2
-3x=9
x=-3
3(x – 4) – 4(2x – 7) = 2x + 2
3x-12-8x+14=2x+2
3x-12-8x+28=2x+2
-7x=-14
x=2