Ответ:
- \(x-(135+159)=293\); \(135+159=294\), поэтому \(x-294=293\), \(x=587\).
- \(x+214+107=508\); \(x=508-214-107=187\).
- \(x+314=705-121\); \(705-121=584\), \(x=584-314=270\).
- \(x-209=380-119\); \(380-119=261\), \(x=261+209=470\).
- \(x+(716-355)=596\); \(716-355=361\), \(x=596-361=235\).
- \(x-(508-204)=561\); \(508-204=304\), \(x=561+304=865\).
- \(x+118=213+407\); \(213+407=620\), \(x=620-118=502\).
- \(x+291=663-197\); \(663-197=466\), \(x=466-291=175\).
- \(x-271=516-119\); \(516-119=397\), \(x=397+271=668\).
- \(x+(209+118)=987\); \(209+118=327\), \(x=987-327=660\).
- \(x+(304-200)=708\); \(304-200=104\), \(x=708-104=604\).
- \(390+x=316+214\); \(316+214=530\), \(x=530-390=140\).
- \(178+x=900-387\); \(900-387=513\), \(x=513-178=335\).
- \(456+x=734+101\); \(734+101=835\), \(x=835-456=379\).
Ответ: 1) 587; 2) 187; 3) 270; 4) 470; 5) 235; 6) 865; 7) 502; 8) 175; 9) 668; 10) 660; 11) 604; 12) 140; 13) 335; 14) 379.
