0,4(6 − х) - 21,2 = 0,7(х − 8)
2.4-0.4х-21.2=0.7х-5.6
-0.4х-0.7х=-5.6+21.2-2.4
-1.1х=24.4
1.1х=-24.4
х=-22 2/11
0,4(6 − х) - 21,2 = 0,7(х − 8)
2.4-0.4х-21.2=0.7х-5.6
-0.4х-0.7х=-5.6+21.2-2.4
-1.1х=24.4
1.1х=-24.4
х=-22 2/11