Решите уровнения
0.8(5-х)-1.2(х+4)=-2.8
[tex]2 \frac{1}{7}x-3 \frac{9}{14} x+x=-3 [/tex]
1.4(3-x)-0.9(x+2)=4.7
[tex]1 \frac{7}{9} x-3 \frac{5}{18} x+x=-2[/tex]
0.8(5-х)-1.2(х+4)=-2.8
[tex]2 \frac{1}{7}x-3 \frac{9}{14} x+x=-3 [/tex]
1.4(3-x)-0.9(x+2)=4.7
[tex]1 \frac{7}{9} x-3 \frac{5}{18} x+x=-2[/tex]
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Answers & Comments
-0,8х-1,2х= -2,8-4+4,8
-2х= -2
х= -2:(-2)
х=1
2)15/7х-51/14х+х= -3
-3/2х+х= -3
-1 1/2х+х= -3
-1/2х= -3
х= -3:(-1/2)
х=6
3)16/9х-59/18х+х= -2
-3/2х+х= -2
-1/2х= -2
х= -2:(-1/2)
х=4