Respuesta :

Answer:4 ans x is -32/10

7 ans b  is 6

10 ans x is 25/7

13 ans x is 9/2

Step-by-step explanation:

prishagupta035

8= 10x+40

10x= 8-40

10x= -32

x= -32÷10

x= -3.2

2b+3b-10= 20

5b= 20+10

5b= 30

b= 30÷5

b= 6

4(3x-1)= 24+5x

12x-4= 24+5x

12x-5x= 24+4

6x= 28

x= 28÷6

x= 4.66

2x+17-9+x= 5x-1

2x+x-5x= -1-17+9

3x-5x= -18+9

2x= -9

x= -9÷2

x= -4.5

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