E = amount she put for Education
CD = amount she put for a Certificate of Deposit.
so, whatever those amounts are, we know that all she got is 70,000 bucks total, so
E + CD = 70000.
how much is three times the CD? well, 3*CD or 3CD.
how much is 10,000 more than that? well 3CD + 10000.
since we know that the amount on Education was 10000 more than three times the CD, then
E = 3CD + 10000.

how much was it invested in the CD? well, CD = 70000 - E.
There are 3 chocolate cookies in the box... i think :P
It’s would be (1,2)
4x+3y=10 <— you solve for x and get x=5/2-3/4y
then substitute the value of x into 9x-4y=1 to get
9(5/2-3/4y)-4y=1
solve the equation for Y
y=2
now sub the value of y into x=5/2-3/4y
x=5/2 - 3/4 times 2
your answer would be x = 1
therefore you get (x,y) (1,2)
Answer:
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