A system of equations is shown below:
n = 3m + 7
n – 2m = 1
What is the solution, in the form (m, n), to the system of equations?
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\[\huge~(3m + 7)– 2m = 1\]
I put equation 1 into equation 2
Now solve that :)
What do I do next?
Solve that get the m value then plug the m value into equation 1
how can I combine the like terms?
I dont know what to do
subtract 7 from both sides
good now divide :)
good so we have m=-6
good so we have
but whats the answer then?
Well thats for u to figure out. We did all the work
okay can u help me with one more?
A pencil at a stationery store costs $1, and a pen costs $1.50. Stella spent $21 at the store. She bought a total of 18 items. Which system of equations can be used to find the number of pencils (x) and pens (y) she bought? (5 points)
1.5x + y = 21
x = 18y
18x + y = 21
x = 1.5y
x + 1.5y = 21
x + y = 18
x + 18y = 21
x = 1.5y