spacehunter22
06.05.2020 •
Mathematics
What is the value of x in the solution of the system of equations 3x + 2y = 12 and 5x – 2y = 42
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Ответ:
x = 27/4
Step-by-step explanation:
3x + 2y = 12 and 5x – 2y = 42
Add the two equations together to eliminate y
3x + 2y = 12
5x – 2y = 42
8x = 54
Divide each side by 8
8x /8 = 54/8
x = 27/4
Ответ:
First they combined like terms on one side.
Step 2: 4p − 2p + 4 = 20
Then they combined like terms on the other side.
Step 3: 2p + 4 = 20
Now you have to subtract 4 from both sides.
Step 4: 2p = 16
So the answer is C. 2p = 16