![subject](/tpl/images/cats/mat.png)
Mathematics, 05.02.2020 08:50 katelynzaro
In order to solve the following system of equations by addition, which of the following could you do before adding the equations so that one variable will be eliminated when you add them?
4x-2y=7
3x-3y=15
a. multiply the top equation by 3 and the bottom equation by 4
b. multiply the top equation by 3 and the bottom equation by 2
c. multiply the top equation by -3 and the bottom equation by 2
d. multiply the top equation by 1/3.
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 17:00
Yosef can eat 21 jamuns while rose can eat just 15 . complete the blank. yosef can eat % more jamuns than rose.
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:30
Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 01:30
As a self-employed seamstress, you know that it takes 7 yards of material to make 3 jackets. you bought 15 yards of material to make 7 jackets. did you buy enough material? if not, how much were you over or under?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 02:30
Robert has 78 tomatoes and 56 cucumbers he wants to plant them in equal rows how many in each row
Answers: 1
You know the right answer?
In order to solve the following system of equations by addition, which of the following could you do...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 00:58
![question](/tpl/images/cats/istoriya.png)
History, 06.05.2020 00:58
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/ekonomika.png)
Business, 06.05.2020 00:58
![question](/tpl/images/cats/istoriya.png)
History, 06.05.2020 00:58
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 00:58
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 00:58
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 06.05.2020 00:58
![question](/tpl/images/cats/en.png)