<span>9.4-7.8x+0.52=1</span>
<span>-7,8х=1-9,4-0,52=-8,92</span>
<span>х=8,92/7,8=1,1436</span>
<span>х=1,1436</span>
9.4-7.8x=1-0.52
9.4-7.8x=0.48
-7.8x=0.48-9.4
-7.8x=-8.92
x= (-8.92) / (-7.8) = <u>892</u>
78
x= <u> 446</u>
39