Question

Solve the equation

x + (x + 1) + (x + 2) + (x + 3) = -210
to find x (the first number in the sequence).

Answer 1

Explanation:

x+(x+1)+(x+2)+(x+3)=-210

x+1x+1+1x+2+1x+3=-210

4x+6=-210

4x=-210-6

4x/4x=-216/4

x=54