Question

287+(120-х)=300 2*х-267=133

Answer 1

287+(120-х)=300
-х=300-120-287
Х=107
2*х-267=133
2*х=400
Х=200

Answer 2

287+(120-х)=300
-х=300-120-287
Х=107
2*х-267=133
2*х=400
Х=200