Answer:
1. 8x - 2 ; x = -1
8(-1) - 2
-8 - 2
2. (x + 3) + 4 ; x = 2
(2 + 3) + 4
5 + 4
3. 3 - x/7 ; x = 7
3 - 7/7
3 - 1
4. 2(x + 3) + 4 ; x = 2
2(2 + 3) + 4
2(5) + 4
10 + 4
5. 23c ; c = 5
23(5)
6. 6(h - 3) ; h = 10
6(10 - 3)
6(7)
7. 55/s ; s = 14
55/14
8. m - 4/n ; m = 25 , n = 3
25 - 4/3
21/3
9. 2d - e ; d = 9 , e = 10
2(9) - 10
18 - 10
10. z - 9 ; z = 16
16 - 9
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Answers & Comments
Answer:
1. 8x - 2 ; x = -1
8(-1) - 2
-8 - 2
= -10
2. (x + 3) + 4 ; x = 2
(2 + 3) + 4
5 + 4
= 10
3. 3 - x/7 ; x = 7
3 - 7/7
3 - 1
= 2
4. 2(x + 3) + 4 ; x = 2
2(2 + 3) + 4
2(5) + 4
10 + 4
= 14
5. 23c ; c = 5
23(5)
= 115
6. 6(h - 3) ; h = 10
6(10 - 3)
6(7)
= 42
7. 55/s ; s = 14
55/14
= 55/14 or 3 13/14
8. m - 4/n ; m = 25 , n = 3
25 - 4/3
21/3
= 7
9. 2d - e ; d = 9 , e = 10
2(9) - 10
18 - 10
= 8
10. z - 9 ; z = 16
16 - 9
= 7