Суравнениями 31*(415-5х)=1085 (330+х)+212=1502

1. 31(415- 5Х)= 1085
31*415 - 31-5х= 1085
12865-155х = 1085
155х = 12865 - 1085
155х= 11780
х = 11780/ 155
х= 76

2.(330 +х) +212 = 1502
330 +х + 212= 1502
542 +х = 1502
х= 1502- 524
х= 960