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sometthing here let x be the 10's digit let y be the 1's digit 7x+6y=75 what's the other equation?
wouldnt it be : 8x - 1 = 15? Wait that might be totally wrong.. :P
ok but does anyone know the answer?
i did the last problem for you. shouldn't you learn how to do then for me to give you the answers
i just need one more example
fun is close help her with the equation should put down
oh ^^ thx i figured it wasnt totally rite :P lol and call me dolly!!
shes missing one little thing
what does y represent?
above i said let y represent the 1's digit remember?
8 times its ten's digit minus 1 times its one's digit is equal to 15 its one's digit in symbols is... 8 * x - 1 * y = 15
so the answer is y= 8x+25
so what is the answer?
we haven't got there yet we have two equations 8x-y=15 and 7x+6y=75
try to solve that first one for either x or y and let me know what you come up with
good now plug that into the y in the other equation so you would 7x+6(_________)=75 what goes in that blank?
7x+6(8x-15)=75 7x+48x-80=75 now see if you can solve this for x
the answer is 3
you made a mistake 6 times 15 is 90
is that the correct answer?
ok then it would be 55x=165 which would make x=3
but thats the 10's digit whats the one's digit
so if x=3, then y=8(3)-15=24-15=9 so yes the answer is 39
myininaya just received a medal from radar
radar just recieved a medal from dolly!!