Question

a-(c-b) c+(a+b) a-(c-k) 420-(350-50) 250+(200+30) 910-(650-450) (360-290)+420 700-(190+210) (980-460)-190

Answer 1

420-(350-50)=120
250+(200+30)=480
910-(650-450)=710
(360-290)+420=490
700-(190+210)=300
(980-460)-190=330