1)8(х-1,4)=0,56    2)(4,6-х)*19=4,18    3)(51,32+х)*0,12=72     4)17,28:(56-х)=36

1)8(х-1,4)=0,56 [latex]x-1.4= \frac{0.56}{8}[/latex] [latex]x-1.4=0.56*0.125[/latex] [latex]x-1.4=0.07[/latex] [latex]x=0.07+1.4[/latex] [latex]x=1.47[/latex] --------------------------------------- 2)(4,6-х)*19=4,18 [latex]\frac{19(4.6-x)}{19}=\frac{4.18}{19}[/latex] [latex]4.6-x=\frac{4.18}{19}[/latex] [latex]4.6-x=0.22[/latex] [latex]-x=0.22-4.6[/latex] [latex]-x=-4.38[/latex]   -------------------------------------- 3)(51,32+х)*0,12=72 [latex]\frac{0.12(x+51.32)}{0.12}=\frac{72}{0.12}[/latex] [latex]x+51.32=\frac{72}{0.12}[/latex] [latex]x+51.32=600[/latex] [latex]x=600-51.32[/latex] [latex]x=548.68[/latex] -------------------------------------   4)17,28:(56-х)=36 56-x=17.28/36 56-x=0.48 -x=-55.52 x=55.52