Asked by deedee
Can someone please check my work?
Solve using substitution method
1. 3x+2y=12
x=52-6y
answer:-40.8 I am pretty sure that one is wrong.
Solve using elimination method
2. 2r-7s=-31
7r+2s=24
answer: (230/53,-468/53)
3.3x+4y=3
6x+8y=6
answer: No answer. problems eliminate eachother
Solve using substitution method
1. 3x+2y=12
x=52-6y
answer:-40.8 I am pretty sure that one is wrong.
Solve using elimination method
2. 2r-7s=-31
7r+2s=24
answer: (230/53,-468/53)
3.3x+4y=3
6x+8y=6
answer: No answer. problems eliminate eachother
Answers
Answered by
Damon
3(52-6y) + 2 y = 12
156 - 18 y + 2 y = 12
-16 y = -144
y = 9
x = 52 - 6(9) = 52 - 54 = -2
156 - 18 y + 2 y = 12
-16 y = -144
y = 9
x = 52 - 6(9) = 52 - 54 = -2
Answered by
deedee
Thank you Damon!
Can you help me with the formula to solve by elimination?
Can you help me with the formula to solve by elimination?
Answered by
Damon
3x+2y=12
x=52-6y multiply everything by 3 on this line
3x+2y=12
3 x = 156 - 18y
---------------- subtract
0 x + 2y = 12 -156 + 18 y
0 = - -144 + 16 y
y = 144/16 = 9 again
x=52-6y multiply everything by 3 on this line
3x+2y=12
3 x = 156 - 18y
---------------- subtract
0 x + 2y = 12 -156 + 18 y
0 = - -144 + 16 y
y = 144/16 = 9 again
Answered by
Anonymous
2r-7s=0
7r+2s=53
7r+2s=53
Answered by
mani
6,174,000,000
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.