Answer:
Step-by-step explanation:
John's age = w
His brother's age = 2*w = 2w
His sister's age = 16 years
Total age of all siblings = 31
w + 16 + 2w = 31
w + 2w + 16 = 31
Combine like terms
3w + 16 = 31
Subtract 16 from both sides
3w = 31 - 16
3w = 15
w = 15/3
w = 5

His brother's age = 2w
= 2*5
= 10

Step by step
One sixth of the sum 1/6 ( + )
the sum of d and 3 1/6 (d+3)
minus the product 1/6 (d+3) - ( )( )
The product of 4 and q 1/6 (d+3) - 4q
The product of p and 3 3p
is subtracted from - 3p
three-fourths of s 3/4 s - 3p
three-fourths the sum 3/4 ( + )
the sum of 9 and k 3/4 (9+k)
Obviously, the final line in each case is the answer.
See the attachment,,I hope it helps
The best unit for measuring the length of an eyelash is millimeters
<h2><u>Pictures:</u></h2><h3 /><h3>1.) Closed Circle. Point on 0. Arrow going Left.</h3>
(Picture Below)
<h3>2.) Open Circle. Point on -1. Arrow going Right.</h3>
(Picture Below)
<h3 /><h3>3.) Closed Circle. Point on -5. Arrow going Right.</h3>
(Picture Below)
<h3 /><h3>4.) Open Circle. Point on 5. Arrow going Left. </h3>
(Picture Below)