7x - 3y = 31
7x + y = -1
Please solve x and y
1 answer:
Answer:
(1, -8)
y= -8
x= 1
Step-by-step explanation:
7x-3y= 31
7x+y= -1
solve the equation
7x-3y=31
7x= -1-y
substitute the value of 7x into an equation
-1-y-3y=31
subtract -y to -3y
-1-4y=31
add both sides by 1
-4y=32
divide both sides by -4
y= -8
substitute the value of y into an equation
7x= -1-(-8)
distribute
7x=7
divide both sides by 7
x=1
(1, -8)
You might be interested in
Answer:
20°
Step-by-step explanation:
If AD =BC then it is the same
Answer:
10+5 =15 thanks for asking
Answer:
6.8
Step-by-step explanation:
simply subtract the length of RT from RV
13.1 - 6.3
Answer:
YES
Step-by-step explanation:
use pythagorean theorem
15^2 + 36^2 = 39^2
225 + 1296 = 1521
1521=1521
Answer:
1) A={0,2,4,12,14,20}
2) 6
3) W={1,3,5,9,21,23,39}
4) 7