azaleagarza06 azaleagarza06

13-03-2021
Mathematics

contestada

Solve
1. 3x(4-9)+7x-5=303
2. 5(2x+3)+12x=17
3. 7(4x-4)-20=38

Respuesta :

sama0gh19 sama0gh19

13-03-2021

1. 12x - 27x + 7x - 5 = 303

- 15x + 7x - 5 = 303

- 8x = 303 + 5

-8x = 308

x = - 38.5

2. 10x + 15 + 12x = 17

22x + 15 = 17

22x = 17 - 15

22x = 2

x = 0.0909090909

3.28x - 28 - 20 = 38

28x - 48 = 38

28x = 38 + 48

28x = 86

x = 3.07

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