Answer:

Step-by-step explanation:
-2x + 2y = -4 (times 3) -6x + 6y = -12
3x + 3y = -18 (times 2) 6x + 6y = -36
.
-6x + 6y = -12
<u>6x + 6y = -36 </u>+
12y = -48

y = -4
.
Substitute the value of y to the one of equations
-2x + 2(-4) = -4
-2x - 8 = -4
-2x = -4 + 8
-2x = 4

x = -2
Answer:
It doesn't matter
Step-by-step explanation:
Negative by negative = positive
All real numbers is the answer
First, change the fractions into decimals. 7 3/4 changes to 7.75 and -7 2/3 changes to -7.66. And then order up the numbers from least to greatest. That will be -7.66(-7 2/3), then -7.3, then 7.23, and then 7.75(7 3/4)