1)7+x=-1
x=-1-7
x=-8
2)2x=5
x=5/2
х=2,5
3)x+(2x+1)=-2
x + 2x + 1 = – 2
x + 2x = – 2 – 1
3x = -3
x = -1
1)7+x=-1
x=-1-7
x=-8
2)2x=5
x=5/2
х=2,5
3)x+(2x+1)=-2
x + 2x + 1 = – 2
x + 2x = – 2 – 1
3x = -3
x = -1