Use the elimination method to solve the system of equations. Choose the
2 answers:
Answer:
C
Step-by-step explanation:
7x + 3y = 30 (equation 1)
-2x + 3y = 3 (equation 2)
9x = 27 (subtract the two equations to eliminate y)
x = 3 (divide by 9)
7 * 3 + 3y = 30 (Substitute x = 3 into equation 1, it doesn't matter which equation you substitute into)
21 + 3y = 30 (7 * 3 = 21)
3y = 9 (Subtract 21)
y = 3 (divide by 3)
Answer is (3, 3)
Answer:
(3,3)
Step-by-step explanation:
7x + 3y = 30
-2x + 3y= 3
Multiply the second equation by -1 and add together to eliminate y
7x + 3y = 30
2x - 3y= -3
---------------------
9x + 0y = 27
Divide by 9
9x/9 = 27/9
x = 3
Now find y
-2x+3y = 3
-2(3) +3y =3
-6 +3y = 3
Add 6 to each side
3y = 3+6
3y=9
Divide by 3
y = 3
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Ok but what did i do wrong and if you never studied the subject how did you know i was wrong
Answer:
60
Step-by-step explanation:
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