Question

Simplify

Answer 1

Answer:

1.) -2x + 24

2.) 3x + 21

3.) 5x - 17

4.) 15x

5.) 18

Step-by-step explanation:

1.) The first step to simplify this equation is to combine like terms. Also remember to always keep the sign before the number/variable to use when combining like terms.  

3x + 14 - 5x + 10

3x - 5x + 14 + 10

   -2x + 24

2.) Use distributive property to distribute the 3 to x and 7. Keep the sign.

3(x + 7)

3x + 21

3.) Use distributive property to distribute the 5 to x and 4 then add three. Keep the signs. Combine like terms.

5(x - 4) + 3

5x - 20 + 3

5x - 17

4.) Once again, use distributive property to distribute the 3x to x and 4. When multiplying 3x times x just think of x with a 1 in front of it (1x) and just multiply 3 times 1. Carry the x when multiplying 4x times 4. Combine like terms.

3x (x + 4)

3x + 12x

15x

5.) All you have to do is replace x in "3x" and solve.

3(10) - 12

30 - 12

18

   

If you have any additional questions feel free to ask me or your teacher so you can really master what you're learning. :)

Answer 2

Answer:

1. -2x+24

2. 3x+21

3. 5x-17

4. 3x²+12x

5. 18

Step-by-step explanation:

2. 3(x)+3(7)=3x+21

3. 5(x)+5(-4)+3= 5x-20+3=5x-17

4. 3x(x)+3x(4)=3x²+12x

5. 3(10)-12=30-12=18