This is how you solve it algebraically:

6x - 5 = 31 (your statement)

6x - 5 + 5 = 31 + 5 (add 5 on both sides)

6x = 36 (simplify)

6x/6 = 36/6 (divide by 6 on both sides)

x = 6

So, d makes the equation true.

6x - 5 = 31 (your statement)

6x - 5 + 5 = 31 + 5 (add 5 on both sides)

6x = 36 (simplify)

6x/6 = 36/6 (divide by 6 on both sides)

x = 6

So, d makes the equation true.