Brendan has 19 red beads, and he has 2 fewer yellow beads than red beads. brendan also has 2 more green beads than red beads. how many beads does brendan have in all?

Brendan has a total of 57 beads

Solution:

Let "a" be the number of red beads

Let "b" be the number of yellow beads

Let "c" be the number of green beads

Given that,

Number of red beads = 19

He has 2 fewer yellow beads than red beads

Number of yellow beads = number of red beads - 2

b = a - 2

b = 19 - 2

Brendan also has 2 more green beads than red beads

Number of green beads = 2 + number of red bead

c = 2 + a

c = 2 + 19

How many beads does Brendan have in all?

Total beads = a + b + c

Total beads = 19 + 17 + 21 = 57

Thus Brendan has 57 beads

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

lockers 1, 4, 9, 16, 25, 40, and 49 are open

i ran through it by the other answer is wrong