lets start with the 1st equation 5y-3/5=4/5
whats the first step?
adding 3/5 to each side?
yes we can... we can also multiply the equation throughout by 5 leaving |dw:1442965991929:dw|
now we add 3 to both sides we get 25y=7 y=7/25 in a similar way if we work its as it is we would get the same answer ..here |dw:1442966307794:dw|
a little confusing but I get it
ok any question before moving onto the 2nd problem ? |dw:1442966674753:dw|
ok we must first find the LCM
lowest common multiple
8 into 16=2 so 2*7z=14z
|dw:1442967219579:dw|multiply both sides by 16...we get 24z=5
whats the next step??
divide each side by 24
so z equals 4.8?
or is it 0.21
wait we made an error 11+14=25 and not 24
so z equals 0.2 then
correct or 1/5 in fraction form
a equals 1.8?
so a equals 1/3