Consecutive numbers are numbers that increase or reduce by 1 step.
Let the first consecutive number be x.
So the three consecutive number in increasing order are:
x, x + 1, x + 2
Notice each is increase of 1.
3*(Sum of 1st and 3rd) = 4*second + 30
3*(x + x + 2) = 4*(x+1) + 30
3*(2x + 2) = 4*x + 4*1 + 30
3*2x + 3*2 = 4x + 4 + 30
6x + 6 = 4x + 34
Simplify by taking the xs to one side and leaving the numbers on the other side
6x - 4x = 34 - 6
2x = 28 Divide by 2
x = 28/2
x = 14
Recall the largest of the consecutive number = x + 2, x = 14
Largest = x + 2 = 14 + 2 = 16
Largest = 16
I hope this helps.
Answer:


Step-by-step explanation:
Given
--- (1)
---- (2)
Required
Find x and y
Make x the subject in (1)


Substitute 5- y for x in (2)


Open bracket

Collect like terms


Divide both sides by 2

Substitute this for y in 


L.C.M


Your answer should be $31.96 because when you multiply 7.99 by 4 that’s what your going to end up with.
so what you would do is 20 x 12 and see what you get and the subtract it from 900 and then see what number would take you to 900