Question

(847+х)-307=694

498+(202-х)=564

(762-х)-392=215

Answer 1

(847+х)-307=694
847+x=694+307
847+x=1001
x=1001-847
x=154

498+(202-x)=564
202-x=564-498
202-x=66
x=202-66
x=136

(762-x)-392=215
762-x=215+392
762-x=607
x=762-607
x=155