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sasho [114]
3 years ago
9

I need help on 15-18

Mathematics
1 answer:
zloy xaker [14]3 years ago
6 0

Answer and step-by-step explanation:

15. 7(8+t) -5t

Break the bracket, we got:

= 7*8 + 7*t - 5t

= 56 + 7t - 5t

= 56 + 2t or 2 (28 + t)

16. 4n - 2n = 84

2n = 84

Divide both side by 2:

2n / 2 = 84 / 2

n = 42

17. y + 3y = 96

4y = 96

Divide both side by 4:

4y / 4 = 96 / 4

y = 24

18. 5p - 2p = 51

3p = 51

Divide both side by 3:

3p / 3 = 51 / 3

p = 17

Hope this helped :3

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