Question

1. 5,3(x – 4) + 8,1(5 – x) = 2,8 x + 9

Answer 1

 1. 5,3(x – 4) + 8,1(5 – x) = 2,8 x + 9
5.3( x -4) + 8.1(5 - x) =2.8x +9

5.3x - 21.2 +40.5 -8.1x = 2.8x +9

-2.8x -21.2 +40.5= 2.8x +9

-2.8x +19.3 = 2.8x +9

-2.8x -2.8x + 19.3 =9

-5.6x=9 -19.3

-5.6x= -10.3
 
x= 103
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       56