Question

238-173-7x7=2xa (5x10+10x5+9:3)-63=5xa 369-208-(10x10+5)=7xa

Answer 1

238-173-7x7=2xa
238-173-49=2xa
65-49=2xa
2xa=16
a=16:2
a=8

(5x10+10x5+9:3)-63=5xa
50+50+3-63=5xa
103-63=5xa
5xa=40
a=40:5
a=8

369-208-(10x10+5)=7xa
369-208-(100+5)=7xa
369-208-105=7xa
161-105=7xa
7xa=56
a=56:7
a=8