221k views
3 votes
Which is the best first step and explanation for solving this system of equations?

Which is the best first step and explanation for solving this system of equations-example-1
User Paolo M
by
5.2k points

2 Answers

7 votes

Answer:

Explanation:

User Arthurfnsc
by
5.8k points
5 votes

Answer:

Subtract the second equation from the first one.

The solution is (1.71, 0.93).

Explanation:

2x + 3y = 7

2x = 4y - 5

2x + 3y - 2x = 7 - (4y - 5) So we eliminate the x term:

3y = -4y + 12

7y = 12

y = 12/7 = 1.714

Plug this into the first equation:

2x + 3(1.714) = 7

2x = 1.858

x = 0.929.

User Nicholas Flees
by
5.9k points