Question

X=5,y=6,z=7,then express 228by x,y,z​

Answer 1

Answer:

x + y + y + z = 13

We already know that x + z = 9, so we can substitute to yield:

2y + 9 = 13

2y = 4

y = 2

Now that we know the value of y, we can return to:

x + y = 6

By substitution we have:

x + 2 = 6

x = 4

By the same process we can solve either of the equations for z by substituting the value of either x or y.

y + z = 7

2 + z = 7

z = 5

Now that we know that x = 4, y = 2, and z = 5, we can sum their values and divide by 3 to get their average.

4 + 2 + 5 = 11

11 divides by 3 is 11/3, or approximately 3.67.

Answer 2

Answer:

228/5*6*7=228/210=114/105