Question

Математика 3 класс упражнения 7

Answer 1

$450 + a = 920 - 40 \ 450 + a = 880 \ a = 880 - 450 \ a = 430$
$x - 340 = 180 + 20 \ x - 340 = 200 \ x = 200 + 340 \ x = 540$
$y div 6 = 63 div 7 \ y div 6 = 9 \ y = 9 times 6 \ y = 54$
$8 times b = 100 - 68 \ 8 times b = 32 \ b = 32 div 8 \ b = 4$