Simplify these expressions. a. 2r + 3 + 4r b. 8 + 3d + d c. mn + (-3mn) + 6 d. 10s + (-10) + (-4s)

a) 6r + 3

b) 8 + 4d

c) - 2mn

d) 6s - 10

Step-by-step explanation:

a) 2r + 3 + 4r

We need to add the like terms

= 2r + 4r + 3

= 6r + 3

b) 8 + 3d + d

We need to add the like terms

= 8 + 3d + d

= 8+4d

c) mn + (-3mn)

We need to add the like terms

= mn - 3mn

= - 2mn

d) 10s + (-10) + (-4s)

We need to add the like terms

= 10s - 10 - 4s

= 10s - 4s - 10

= 6s - 10

a) 3 + 6r

b) 8 + 4d

c) 6 - 2mn

d) - 10 + 6s

Step-by-step explanation:

Combine all like-terms:

d) 10s + - 10 + - 4s

-10 + 6s

c) mn + - 3mn + 6

6 - 2mn

b) 8 + 3d + d

8 + 4d

a) 2r + 3 + 4r

3 + 6r

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