<span>Simplifying
z + 18 = y
Reorder the terms:
18 + z = y
Solving
18 + z = y
Solving for variable 'z'.
Move all terms containing z to the left, all other terms to the right.
Add '-18' to each side of the equation.
18 + -18 + z = -18 + y
Combine like terms: 18 + -18 = 0
0 + z = -18 + y
z = -18 + y
Simplifying
z = -18 + y</span>
Answer:13 students
Step-by-step explanation: 6+7=13
Using order of operations PEMDAS you first multiply 5 * 2 to get 10 then divide 10 by 70 to get rougly 0.14 and then subtract it by 8 to get -7.86 roughly. <span />
To find the answer,we can set an equation adding up all the angles:
a°+2a°+2a°+a°=360°
6a°=360°
a°= 360°/6
a = 60
Therefore,the answer is 60.
Hope it helps!
