Answer: 28
Step-by-step explanation:
Using the similarity rule we get the equation
(10+x)/(15+42) = x/42
420 + 42x = 57x
420 = 15x
x = 420/15 = 28
Ans: 10+7n
Step-by-step explanation: there you go
Answer:
+×- =-
r-5r
-4r is the best answer
