Elimination
first i would divide the second equation by -2.
x - y = -2
-x- 2y = -19
the x is eliminated.
-3y = -21
divide each side by -3.
y = 7
plug 7 in for y to solve for x
x-7 = -2
x = 5
(5,7)
It's not necessary, but it makes solving quicker, and more efficient. You'd have to find the LCD at some point, and doing it at the beginning helps you to not encounter as many errors as you would otherwise
Answer:
-161.363
Step-by-step explanation:
I might be wrong, sorry if I am
0.389= (3x1/10)+(8x1/100)+(9x1/1,000=
Answer:
Step-by-step explanation:
4x + 2y = 14
-4x - 2y = -16
0 ≠ -2
no solutions
