Question

988-с=128•5 1000-а=630:2

Answer 1

$988 - c = 128 times 5 \ 988 - c = 640 \ c =988 - 640 \ c = 340$

$1000 - a = 630 div 2 \ 1000 - a = 315 \ a = 1000 - 315 \ a = 685$

Answer 2

с=348,а не 340