Question

решите уровнение 5 клас 87:(4x+5)=3

Answer 1

$87 div (4x + 5) = 3 \ frac{87}{4x + 5} = 3 \ \ 87 = 3(4x + 5) \ 87 div 3 = 3(4x + 5) div 3 \ 29 = 4 x+ 5 \ - 4x = 5 - 29 \ - 4x = - 24 div - 4 \ x = 6$