Answer:
The answer is y=x-5
Step-by-step explanation:
y=x-5
Simple...if you want to solve this.....
49-7x=21
Isolate the variable (x)
49-7x=21
-49 -49
-7x=-28
Now, simplify...
x=4
Thus, your answer.
Answer:
do you still need help?
Step-by-step explanation:
First, add the whole numbers: 2 + 3=5. 5 + 1/2=5 1/2+ 3/4=6 1/4. 10-6 1/4=3 3/4!
Answer:
2a +2b +4
Step-by-step explanation:
The perimeter is the sum of the lengths of the three sides. If x represents the length of the third side, then ...
(3a +8) +(5a +b) +x = (10a +3b +12)
Subtracting from the equation everything on the left side that is not x, we get ...
x = (10a +3b +12) -(3a +8) -(5a +b)
= a(10 -3 -5) +b(3 -1) +(12 -8)
= 2a +2b +4
The length of the third side is 2a +2b +4.