The silent letter is K in the word know.
21xyz/28yz=[(7yz)(3x)] / [(7yz)(4)]=3x/4
Answer: <span>21xyz/28yz=3x/4</span>
Isolate the x. Note the equal sign. What you do to one side, you do to the other.
Subtract 9 from both sides
x + 9 (-9) = -4 (-9)
x = -4 - 9
x = -13
-13 is your solution
hope this helps
Answer: 27
Step-by-step explanation:
Consider the inequality
First, add (-3) to both sides of inequality:
Then multiply by (-1), remembering that multiplication by negative number changes the sign of inequality:
Now divide by 3:
Answer: correct choice is A.