Question

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2,4 + (х : 3 – 5) = 4

Answer 1

$\displaystyle 2,4+(x:3-5)=4\\\\\frac{12}{5}+(\frac{1}{3}x-5)=4\\ \\\frac{12}{5}+\frac{1}{3}x-5=4\\ \\-\frac{13}{5}+\frac{1}{3}x=4\\ \\-39+5x=60\\ 5x=60+39\\ 5x=99\\ \\x=\frac{99}{5}=19\frac{4}{5}=19,8$

Answer 2

2,4+х:3-5=4
2,4+х:3=4+5
2,4+х:3=9
х:3=9-2,4
х:3=6,6
х=3•6,6
х=19,8