Решите уравнение: 1)2х+9,8=13,6 2)10,36-3х=5,86 3)4,2х-6=3,66 4)19,5-0,3х=15,9 5)(7-0,2х)*1,4=7,56 6)(6,1х-13,2):1,7=3
1) 2x9.8=13.6 2x=13.6-9.8 2x=3.8 x=3.8/2 x=1.9 2) 10.36-3x=5.86 10.36-5.86=3x 4.5=3x x=4.5/3 x=1.5 3) 4.2x-6=3.66 4.2x=3.66+6 4.2x=9.66 x=9.66/4.2 x=2.3 4)19.5-0.3x=15.9 19.5-15.9=0.3x 3.6=0.3x x=3.6/0.3 x=12 5)(7-0.2x)*1.4=7.56 7-0.2x=7.56/1.4 7-0.2x=5.4 7-5.4=0.2x 1.6=0.2x x=1.6/0.2 x=8 6)(6.1x-13.2)/1.7=3 6.1x-13.2=3*1.7 6.1x-13.2=5.1 6.1x=5.1+13.2 6.1x=18.3 x=18.3/6.1 x=3