How do solve the following linear system?: y=−6x−9,−3x+7y=−1?
1 Answer
Jan 15, 2016
x = 62/-45
y = 33/45
Explanation:
We will solve it simultaneously,
put y = -6x -9 in -3x + 7y = -1
-3x + 7(-6x - 9) = -1
-3x -42x -63 = -1
-45x = -1 + 63
-45x = 62
x = - 62/ 45
put x in y..
y = -6( -62/45) - 9
y = 372/45 -(9 *45/45)
y = 33/45
