Solve the system of equations x + y = 4 and -9x + 7y = -84 by combining the equations.

1 answer:

Yanka [14]2 years ago

6 0

Answer:

x = 7

y = -3

Step-by-step explanation:

x + y = 4 (Multiply this by 9)

-9x + 7y = -84

9x + 9y = 36

-9x + 7y = -84

16y = -48

y = -3

x + y = 4

x - 3 = 4

x = 7

You might be interested in

d1i1m1o1n [39]

# ov wekz..... \_ >_○ _/

5 0

2 years ago

viktelen [127]

The measure of the third angle is 74

7 0

2 years ago

Vedmedyk [2.9K]

U have to add If u want to know the sum

3 0

2 years ago

Vladimir [108]

Find the ratio of the area to the square radius for each circle.

6 0

2 years ago

Elanso [62]

Answer:

eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee hi

Step-by-step explanation:

5 0

2 years ago