0,7+0,3(x+2)=0,4(x-3)
Решите задачу:
0.7 + 0.3х+ 0.6 = 0.4х - 1.2
0.3х-0.4х= -1.2-0.7-0.6
-0.1х = -2.5
х= -2.5/-0.1
х= 25