For two lines to be parallel, they must have the same slope...
3y=-5x+15
y=-5x/3 +5, y=mx+b, where m=slope so:
A parallel line with have a slope of -5/3
9 + -6 -6 : perform multiplication
Simplify - -3
1/8*5 is 5/40 and you applied it on 1/10 it is going to be 5/50 the denominator has to be the same
Hundreds, just count the place value from the right and go from there and work your way to the left.
ones, hundreds, thousands, ten thousands, etc // you only use 'ths' at the end if it's before a decimal