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Izzyfizzy
18.12.2019 •
Mathematics
What is the solution to the system of equations?
use the substitution method.
y=−3x+1
2x+5y=18
enter your answer in the boxes.
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Ответ:
(-1, 4)
Step-by-step explanation:
It is convenient to use the expression for y that the first equation gives. Put that in the second equation.
2x +5(-3x+1) = 18
2x -15x +5 = 18 . . . . eliminate parentheses
-13x = 13 . . . . . . . . . . collect terms, subtract 5
x = -1 . . . . . . . . . . . . . divide by -13
Now, we can use this value of x in the first equation to find y.
y = -3(-1) +1 = 4
The solution is (x, y) = (-1, 4).
Ответ:
(-1, 4)
Step-by-step explanation:
What you do is it tells you to use the substitution method so you take the first equation and substitute it into the y in the second equation.
2x+5(-3x+1)=18
2x-15x+5=18
-13x+5=18
-13x=13
x=-1.
You will then take the -1 and put it into the x in the first equation to get y.
y=-3(-1)+1.
y=3+1
y=4.
(-1, 4) is your answer.
Ответ:
-58185.70868
Step-by-step explanation:
Ello, so basically yh
the way u work this out is by: go on google nd ask this same maths question
and then the anwer will come.