Explanation:
If the equation is multiplying the two variables, then:
2x * 3(6) = 36
2x * 18 = 36
2/18x = 2
x = 4/18 (or 2/9)
If the equation is adding the two variables, then:
2x + 3(6) = 36
2x + 18 = 36
2x = 18
x = 9
If the equation is subtracting the two variables, then:
2x - 3(6) = 36
2x - 18 = 36
2x = 54
x = 27