4(0,6-0,3)-3(0,7x-0,1)=0

Question

4(0,6-0,3)-3(0,7x-0,1)=0

Answer 1

4×0.3-2.1x+0.3=0
1.2-2.1x+0.3=0
1.5-2.1x=0
-2.1x=-1.5
x=5/7

Answer 2

4*(0,6-0,3)-3*(0,7х-0,1)=0
4*0,6-4*0,3-3*0,7х+3*0,1=0
2,4-1,2-2,1х+0,3=0
-2,1х=1,5
х=1,5/(-2,1)
х=-15/21
х=-5/7
Ответ : х= - 5/7