Question

1.

ALGEBRAICALLY solve each system of equations below. Show all of your work!
a. 7x - y = 98
3x-5y=10
b. x + 3y = 4
x = 6 - 27

Answer 1

a. y = 7x-98

y =-3/5x-2

b. y =-1/3x+4/3

x =-21

Explanation:

a. 7x - y = 98

98 - 7x

-y = -7x + 98

divide by -

y = 7x - 98

3x - 5y = 10

10 - 3x

-5y = -3x + 10

divide by -5

y = -3/5x - 2

b. x + 3y = 4

4 - x

3y = -1x + 4

divide by 3

y = -1/3x + 4/3

x = 6- 27

x = -21