Answer:
C. 3x+6y=9 and-2x-4y=4
Step-by-step explanation:
Given
Steps:
The attachment completes the question
(a): -2x+4y=4 and -3x+6y=6
Multiply by 2:
Multiply by 3:
Add together
B. 3x+y=12 and -3x+6y=6
Multiply by 2:
Multiply by 3:
Add together:
C. 3x+6y=9 and-2x-4y=4
Multiply by 2:
Multiply by 3:
Add together:
This is the equation the student could have used because 0 = 30 means the equation has no solution.
Answer:
4 1/4 is 4.25 as a decimal
Step-by-step explanation:
4/4=100
2/4=50
1/4=25
divide the number
Answer:
3x - 6 = x + 9
2x - 6 = 9
2x = 15
x = 7.5
Step-by-step explanation: