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Answer:
1. 6a + 3, a=5
= 6(5) + 3
= 30 + 3
=33
2. 15a - 24b + 15, a=4 and b=2
= 15(4) - 24(2) + 15
= 60 - 48 + 15
= 12 + 15
= 27
3. x + 3 ( x - 5) , x = 15
= 15 + 3 ( 15 - 5)
= 15 + 3 ( 10)
= 15 + 30
= 45
4. 50a (2 - a ), a=7
= 50(7) (2 - 7)
= 350 ( -5)
= -1,750
5. 4a / (13 - 9b), a=6 and b=1/3
= 4(6) / (13 - 9(1/3))
= 24 / ( 13 - 3)
= 24 / 10
= 12/5
6. (30m + 5) + n, m=1/5 and n=15
= (30(1/5) + 5) + 15
= (6 + 5) + 15
= 11 + 15
= 26
Step-by-step explanation:
It's just substitution lang po
1. 6a + 3 ; a=5
6(5) + 3
30 + 3
= 33
2. 15a - 24b + 15
15(4) - 24(2) + 15
60 - 48 + 15
12 + 15
= 27
3. x+3(x-5)
15+3(15-5)
18(10)
= 180
4. 50a(2-a)
50•7(2-7)
350(-5)
= -1750
5. 4a/(13-9b)
4(6)/13-9(1/3)
24/13-3
24/10
= 2.4
6. (30m+5)+n
(30(1/5)+5)+15
(6+5)+15
11+15
= 26