Question

пожалуйста 45*3+x=216 второе 150/x=750/50 тритье [56+104]/x=16

Answer 1

$45 times 3 + x = 216 \ 135 + x = 216 \ x = 216 - 135 \ x = 81$
$frac{150}{x} = frac{750}{50} \ 150 times 50 = 750x \ 7500 = 750x \ x = 7500 div 750 \ x = 10$
$frac{56 + 104}{x} = 16 \ frac{160}{x} = 16 \ x = 160 div 16 \ x = 10$