Question

Реши уравнение и введи значение x в поле:



А) 3,2x - 1,5 = 1,7x



 
B) 2 - (0,9x - 1,3) = 1,3x



 
C) - (3,3x + 1,2) - (0,7x + 1,6) = 0



 
D) - (4,1x + 2,5) - (2,3x + 3,9) = 1,6x



 
E) (3,6x + 2,5) - (1,8x + 2,3) = 1,6x



 

Answer 1

 $1)3.2x-1.5=1.7x\3.2x-1.7x=1.5\1.5x=1.5\x=1.5/1.5\x=1 \ \ 2)2-(0.9x-1.3)=1.3x\2-0.9x+1.3=1.3x\-0.9x-1.3x=-2-1.3\-2.2x=-3.3\x= frac{-3.3}{-2.2} \ x=1.5$

$3)-(3.3x+1.2)-(0.7x+1.6)=0\-3.3x-1.2-0.7x-1.6=0\-4x-2.8=0\-4x=2.8\x=-0.7 \ \ 4)-(4.1x+2.5)-(2.3x+3.9)=1.6x \ -4.1x-2.5-2.3x-3.9=1.6x\-4.1x-2.3x-1.6x=2.5+2.3\-8x=6.4\x=-0.8$
 
$5)(3.6x+2.5)-(1.8x+2.3)=1.6x\3.6x+2.5-1.8x-2.3=1.6x\1.8x-1.6x=2.3-2.5\0.2x=--0.2\x=-1$