Question

решите уравнение 24:(5,4-8,4x)=20

Answer 1

24:(5.4-8.4x)=20
(5.4-8.4x)=24:20
(5.4-8.4x)=1.2
8.4x=5.4-1.2
8.4x=4.2
x=4.2:8.4
x=0.5                   
24:(5.4-(8.4*0.5))=20

Answer 2

24:(5,4-8,4х)=20; (5,4-8,4х)=24:20; (5,4-8,4х)=1,2; 8,4х=5,4-1,2; 8,4х=4,2; х=4,2:8,4; х=0.5