Question

2(x+1)=-6

Answer 1

2x + 2 = -6
2x = -6 -2
2x = -8/2
x = -4

Answer 2

2x+2=-6
2x=-6-2
2x=-8
x=-8/2
x=-4

Answer 3

the basic concept is that open the bracket
ie mutiply 2 with x and 2 with 1 and add
ie 2x+2
just like distributive property
a(b+c)=ab+ac