Marry had 21 3 4 grams of salt. She used 7 1 4 grams to make spinach omelets and 4 7 8 grams to make mushroom omelets. About how much salt does Marry have left? Choose the best estimate.

Respuesta :

942 because 2,134 -714 =1,420 and 1,420 -478 = 942