Question

Решите номера 3 и 4 плиз

Answer 1

$x+2\frac57=4\frac12\\x=4\frac12-2\frac57\\x=4\frac7{14}-2\frac{10}{14}\\x=3\frac{21}{14}-2\frac{10}{14}\\x=1\frac{11}{14}\\\\4,25+1\frac{11}{12}-\frac7{15}=4\frac14+1\frac{11}{12}-\frac7{15}=4\frac{15}{60}+11\frac{55}{60}-\frac{28}{60}=15\frac{42}{60}=15\frac7{10}$