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)
mitki
3.2х-1.5=1.7х
3.2х-1.7х=1.5
1.5х=1.5
х=1.5:1.5
х=1
2-(0.9х-1.3)=1.3х
2-0.9х+1.3=1.3х
-0.9х-1.3х=-1.3-2
-2.2х=-3.3
х=-3.3:(-2.2)
х=1.5
-(3.3х+1.2)-(0.7х+1.6)=0
-3.3х-1.2-0.7х-1.6=0
-3.3х-0.7х=1.6+1.2
-4х=2.8
х=2.8:(-4)
х=-0.7
-(4.1х+2.5)-(2.3х+3.9)=1.6х
-4.1х-2.5-2.3х-3.9=1.6х
-4.1х-2.3х-1.6х=3.9+2.5
-8х=6.4
х=6.4:(-8)
х=-0.8
(3.6х+2.5)-(1.8х+2.3)=1.6х
3.6х+2.5-1.8х-2.3=1.6х
3.6х-1.8х-1.6х=2.3-2.5
0.2х=-0.2
х=-0.2:0.2
х=-1
375:5+(400-346)*2=75+54*2=75+108=183
2)900-194:2-345*2=900-97-690=113