Question

Please help I dont know what to do!!!

#1 x÷4=3.5÷28
#2 3/5 + 4/5x +7/10x + 1 1/2 = 5 3/5
Thank you so much guys!!!!!!!!

Answer 1

Hey John

Let's start solving #1

x/4 = 3.5/28
Cross multiply
(x)(28) = (3.5)(4)
28x = 14
Divide both sides by 28
28x/28 = 14/28
x = 1/2

Next, let's solve the second one


`(3)/(5) + (4)/(5x) + (7)/(10x) + 1 (1)/(2) = 5 (3)/(5)`
Simplifies to:

`(105x+75)/(50x) = (28)/(5)`
Cross multiply
(105x + 75)(5) = (28)(50x)
525x + 375 = 1400x
Subtract 1400x to both sides
525x + 375 - 1400x = 1400x - 1400x
-875x + 375 = 0
Then subtract 375 from both sides
-875x + 375 - 375 = 0 - 375
-875x = -375
To find x, divide both sides by -875
-875x/-875 = -375/-875
x = 3/7

Let me know if you have questions about the answer.

Best of luck with your studies!