Add the following fractions. 3/8 1/9 =

+ =

First, you want to multiply the the numerators and denominators to get the lowest common denominator in all fraction denominators.

The lowest common denominator of these fractions is 72. So we will now rewrite the equation with our equivalent fractions.

+ ≈

c

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -