Asked by Anonymous
Solve system of equations algebraically.
1. 3x-3y=24 and 2x+5y=-37
2. -9x+10y=-2 and 45x-50y=11
3. -9x-3y=-3 and 18x+6y=6
4. -5x-6y=-23 and 8x+7y=29
5. 9x-7y=4 and 5x+3y=-46
1. 3x-3y=24 and 2x+5y=-37
2. -9x+10y=-2 and 45x-50y=11
3. -9x-3y=-3 and 18x+6y=6
4. -5x-6y=-23 and 8x+7y=29
5. 9x-7y=4 and 5x+3y=-46
Answers
Answered by
Reiny
I will do the last one, you do the others
5.
9x - 7y = 4
multiply each term by 3 ---> 27x - 21y = 12
5x + 3y = -46
multiply each term by 7 ---> 35x + 21y = -322
add these last two equations
62x = -310
x = -5
sub into
5(-5) + 3y = -46
3y=-21
y = -7
x= -5, y = -7
5.
9x - 7y = 4
multiply each term by 3 ---> 27x - 21y = 12
5x + 3y = -46
multiply each term by 7 ---> 35x + 21y = -322
add these last two equations
62x = -310
x = -5
sub into
5(-5) + 3y = -46
3y=-21
y = -7
x= -5, y = -7
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.