lilaarmenta lilaarmenta

08-11-2019
History

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2) Solve the equations, explain the steps for part a.

a) -3(2x + 4) = 7x + 19

b) 2x+4 = 7 -5x

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SilvanaMartins SilvanaMartins

12-11-2019

Answer: a) x= 2,38 b) x = 0,42

Explanation:

a) -3(2x + 4) = 7x + 19

-6x - 12 = 7x + 19

-6x - 7x = 19 + 12

-13x = 31

x = 31

13

x= 2,38

b) 2x+4 = 7 -5x

2x + 5x =7 -4

7x = 3

x= 3

7

x = 0,42

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