After Sally had given 1/9 of her stamps to Andy, she had 280 stamps (since they now have equal shares). So 280 was 8/9 of what she started with, making the 1/9 she handed over equal to 280/8, that’s 35. And Andy was “under” by the same amount she was “over” an equal share, that’s 35 under matching her 35 over, which is 70 altogether.
By all means use algebra but you may find you can reason a word problem through in words.
Answer:
x = 23.999996
Step-by-step explanation:
Let's solve your equation step-by-step.
64−x+52=128x
Solve Exponent.
64−x+52=128x
log(64−x+52)=log(128x)(Take log of both sides)
(−x+52)*(log(64))=x*(log(128))
−x+52=(
log(128)
log(64)
)*(x)
−x+52=1.166667*x
−x+52=1.166667x(Simplify both sides of the equation)
−x+52−1.166667x=1.166667x−1.166667x(Subtract 1.166667x from both sides)
−2.166667x+52=0
−2.166667x+52−52=0−52(Subtract 52 from both sides)
−2.166667x=−52
−2.166667x
−2.166667
=
−52
−2.166667
(Divide both sides by -2.166667)
x=23.999996
Sorry is this is wrong, did it in a hurry :(
R=C/2(eliminate "2" from r by dividing both sides by 2)
The answer would be:
93
+75
-------
168
