Answer:
Step-by-step explanation:
Solve for x
- 4 (x - 2) = - 4 There are a a couple of ways of doing this. Divide by - 4
-4 (x - 2)/-4 = - 4/-4 Combine
x - 2 = 1 Add 2
x = 3
Solve for y
9 + 2(y - 3) = 3(y - 2) + 1 Remove the brackets on both sides.
9 + 2y - 6 = 3y - 6 + 1 Combine
9 - 6 + 2y = 3y - 5
3 + 2y = 3y - 5 Add 5
3 + 5 + 2y = 3y Subtract 2y
8 + 2y - 2y = 3y - 2y
8 = y
Solve for z
z/3 + 1/2 = 5/2 Subtract 1/2 from both sides.
z/3 + 1/2 - 1/2 = 5/2 - 1/2 Combine
z/3 = 4/2
z/3 = 2 Multiply by 3
z/3*3 = 2*3
z = 6
So far what you have is
3
==
8 || 6
== must = 4 because 3 + 8 + 4 = 15
|| must = 1 because 8 + 6 + 1 = 15
You have 3 numbers left to place 5,7,2
The right hand upper corner = 7.
I'll leave you to place the 5 and 2
