Answer:
one solution
Step-by-step explanation:
-2x - 4 = x - 5
-3x - 4 = -5
-3x = -1
x = 1/3
y = 1/3 - 5
y = 1/3 - 15/3
y = -14/3
(1/3, -14/3)
Answer:
<h2><u>7</u>x - <u>7</u>y + <u>21</u> </h2>
Step-by-step explanation:
7(x - y + 3)
=> 7 × x - 7 × y + 7 × 3
=> <u>7</u>x - <u>7</u>y + <u>21</u>
Answer:
2.7
3
6
Step-by-step explanation:
2.7×3 = 8.1
3x3=9
6×3= 18
18-8.1= 9.9 < 10
18-9= 9 < 10
18-18=0 < 10
Answer: Option C
Step-by-step explanation:
C because 6+1=1+1+1+1+1+1+1
Answer:
D. 
Step-by-step explanation:
Consider the set

This set consists of four ordered pairs.
The first numbers in these pairs are
These numbers are integer numbers (not natural, because -3 is negative).
The second numbers in these pairs are
These numbers are integer numbers too (not natural, because -2 is negative).
Options contain only natural and real sets, so, the first and the second numbers are real numbers and
