Hi
So far I understans that if x is right up against a number it means to multiply. Then I watched a video where the guy said 'if you don't see a sign on a term then it means it's automaticly positive so 9y is = +9y this was the equation
9y-30=2y=5
but could he have used x instead of y? and if so how do you know if that 9y or 9x is plus or multiply?
So far I understans that if x is right up against a number it means to multiply. Then I watched a video where the guy said 'if you don't see a sign on a term then it means it's automaticly positive so 9y is = +9y this was the equation
9y-30=2y=5
but could he have used x instead of y? and if so how do you know if that 9y or 9x is plus or multiply?