First set up your two equations:
x + y = 90
x = 2y - 30
Then substitute what x equals in the second equation into the first equation:
(2y -30) + y = 90
Now solve for y:
3y -30 = 90
3y = 120
y = 40
Then use y = 40 and substitute the value for y into one of your original equations and solve for x. I'll choose the first one, but either one will work.
x+ 40 = 90
x = 50
So your solution is x = 50 and y = 40
Answer:
Step-by-step explanation:
k=15/20*5
k= 75/20 or 3.75
fraction can also be 15/4 or 3 3/4
Step-by-step explanation:
you have to multiply 8400 by .65 to get you the remaining money in his account after a year which is 5460 so Carlos lost 2940 dallors in one year
Answer:
B
Step-by-step explanation:
Answer:
1/5(14+×)
Step-by-step explanation:
The sum of 14 and x has to be (14+x)
