Please help!

90+3x+3y=2x+5y

For x   .....   subtract 90, 3y, 2x from both sides......

x = 2y - 90     (1)

Using (1) and soving for y .......add 90 to both sides

x + 90  = 2y    divide both sides by 2

y = [ x + 90]/ 2

We don't have any "numerical" solutions because we have two unknowns, but only one equation.....thus....there are infinite solutions for x, y

Solving for x and y: 90+3x+3y=2x+5y

For every EVEN x from 2  y=46, as x increases by 2  y increases by 1,

So, for x=4.........................y=47

............x=6.........................y=48........and so on ad infinitum!!!