Question

Simplify each expression
3+8b+4+7b-3

Answer 1

9. 15b + 4

10. 4y + 6

11. 15r+72

12. 130n + 20

Explanation:

9. Combine Like terms

10. Combine Like terms

11. Distribute the 8 into (r + 9) then combine like terms

12. Distribute 10 into (3n + 2 + 10n) then combine like terms

Answer 2

`\mathsf {9) 15b + 4}\\\mathsf {10) 4y + 6}\\\mathsf {11) 15r + 72}\\\mathsf {12) 130n + 20}`

Explanation:

`\textsf {Question 9}`

`\mathsf {3 + 8b + 4 + 7b - 3}`

`\mathsf {8b + 7b + 4 + 3 - 3}`

`\mathsf {15b + 4}`

`\textsf {Question 10}`

`\mathsf {8 + 7y - 3y + 2 - 4}`

`\mathsf {7y - 3y + 8 + 2 - 4}`

`\mathsf {4y + 6}`

`\textsf {Question 11}`

`\mathsf {8(r + 9) + 7r}`

`\mathsf {8r + 8(9) + 7r}`

`\mathsf {8r + 7r + 72}`

`\mathsf {15r + 72}`

`\textsf {Question 12}`

`\mathsf {10(3n + 2 + 10n)}`

`\mathsf {10(13n + 2)}`

`\mathsf {10(13n) + 10(2)}`

`\mathsf {130n + 20}`