2*х-267=133287+(120-х)=300300-78:х=287750+10*х=750

Question

2*х-267=133
287+(120-х)=300
300-78:х=287
750+10*х=750

Answer 1

1) 2x=400
    x=200
2)120-x=13
    x=107
3) 78:x=13
     x=6
4) 10x=0
     x=0