Question

64-x==4,x+8=28,x-9=17

Answer 1

64-×=4 ×=64-4 ×=60 ___________ 64-60=4 ×+8=28 ×=28-8 ×=20 ------------------ 20+8=28 ×-9=17 ×=17+9 ×=26 ------------------ 26-9=17