Question

7. Simplify these expressions and find their values if x=3, a=-1,b=-2.
(i) 3x - 5- X + 9
(0) 2-8x + 4x + 4
(i) 3a + 5 - 8a + 1
(iv) 10 - 3 - 4 - 5b
(v) 2a - 2b-4-5+ a​

Answer 1

Answer:

1. 9-5-3+9=10
2. 2-24+12+4=38
3. -3+5+8+1=11
4. 10-3-4+10=13
5. -2+4-4-5-1=-8

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

1) :3(3)-5-(3)+9

9-5-3+9

4-3+9

1+9

10

°°°°

2) 2-8(3)+4(3)+4

2-24+12+4

-22+16

6

°°°°

3). :3(-1)+5-8(-1)+1

-3+5+8+1

2+9

11

°°°°

4):10-3-4-5(-2)

7-4+10

3+10

13

°°°°°

5) :2(-1)-2(-2)-4-5+(-1)

-2+4-9-1

2-9-1

8

°°°°°°

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