confused algebra (1 Viewer)

[gijoe]

Can someone work out this for me I've forgotten how to do it.

If the sum of a number and 5 is divided by 4 the result is 3

 

[rama_v]

(x+5)/4 = 3

X+5=12
X=7

 

[KFunk]

Can someone work out this for me I've forgotten how to do it.

If the sum of a number and 5 is divided by 4 the result is 3

You should starting by letting the number you're trying to find be represented by the letter 'n'.

Using the statement you gave me:

When you add n and 5 ------> n+5

and divide that by 4 ------> (n + 5)/4

then that equals 3 ------> (n+5)/4 = 3

then you just manipulate it:

(n+5)/4 = 3

n + 5 = 4(3)

n + 5 = 12

n = 7