How do you solve this system of equations: 5y - 4x = 10 and x - 7y = - 37?
1 Answer
Nov 20, 2017
x = -
y = -
Explanation:
-
Solve equation 2 for x
x - 7y = 37
x = 7y + 37 -
Substitute (7y + 37) in for x in equation 1
5y - 4(7y + 37) = 10 -
Solve equation for y
5y - 28y - 148 = 10
-23y = 158
y = -158/23 -
Subsititute and solve
-158/23 in for y in equation 2
x - 7( -158/23 ) = -37
x +1106/23 = -37
x = -1957/23 -
x = -
1957/23
y = -158/23
You can divide each x and y for the decimal form too!