Question

suppose the solution x = 6 increases to x = 9, and the left side of the equation stays the same. How would the right side need to chang if the solution is now x = 9

Answer 1

X = 9 - 3, does this help?

Answer 2

The original solution of the equation

x=6

Adding 3 on both sides, gives

x+3=6+3

x+3=9

x=9-3

So,Addition of 3 on left hand side or subtraction of 3 from 9 in right hand side gives solution x=9.