Question

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Answer 1

$b)3x + a = 3 . 5 + 2 = 15 + 2 = 17\\\\c) 5a + 2b +c = 5 . 2 + 2 . 1 + 7 = 10 + 2 + 7 = 19\\\\d)3x - 2y = 3 . 5 - 2 . 2 = 15 - 4 = 11\\\\e) 4a + 2b - c = 4 . 1 + 2 . 3 - 5 = 4 + 6 - 5 = 5\\\\f) a - b + 3c = 1-4 + 3.5 = -3 + 15 = 12\\\\g) 7a - 2b = 7 . 1 - 2 . 5 = 7 - 10 = -3\\\\h)ab + c = 2 . 1 + 3 = 2 + 3 = 5$

Answer 2

Resposta:

b) 3x+a x=5, a=2

3.5+2

15+2

17

c) 5a+2b+c a=2, b=1, c=7

5.2+2.1+7

10+2+7

12+7

19

d) 3x-2y x=5, y=2

3.5-2.2

15-4

11

e) 4a+2b-c a=1, b=3, c=5

4.1+2.3-5

4+6-5

10-5

5

f) a-b+3c a=1, b=4, c=5

1+4+3.5

1+4+15

5+15

20

g) 7a-2b a=1, b=5

7.1-2.5

7-10

-3

h) ab+c a=2, b=1, c=3

2.1+3

2+3

5