Question

483. Решите уровнения a) 15x = 0,15 б) 295,1: (x-3) = 13 а) 308:y=4 г) 534×(x+1,2)=961,2​

Answer 1

$15x=0,15\Leftrightarrow 15x=\frac{15}{100}\Leftrightarrow x=\frac{15}{100}:15=\frac{1}{100}=0,01$

$3,08:y=4\Leftrightarrow 3,08=4y\Leftrightarrow \frac{3,08}{4}=y\Rightarrow y=0,77$

$295,1:(x-3)=13\Leftrightarrow 295,1=13(x-3)\Leftrightarrow \frac{295,1}{13}=x-3\Leftrightarrow 22,7=x-3\Rightarrow x=25,7$

$534(x+1,2)=961,2\Leftrightarrow x+1,2=\frac{961,2}{534}\Leftrightarrow x+1,2=1,8\Rightarrow x=0,6$