Question

Math Journal Mr. Ramírez writes the equation x+1=7 and the set {2,3,6,7)

on the board. Tell if each value in the set is a solution of the equation and why.
What does it mean to solve the equation x + 1 =7?

Answer 1

To solve the equation, you just need to find the value of "x".
To do this isolate the variable or use a systematic trial of guessing. Here we would substitute each number in to the equation to find which one is correct.

if x=2

(2)+1

=3 ≠ 7

if x=3

(3)+1

=4 ≠ 7

if x=6

(6)+1

=7=7