Question

Составь верные числовые равенства , используя данные числа 3. 5. 9. 4. 8 и 30. 50. 90. 40. 80

Answer 1

3+5 = 8; 5 = 8-3; 3 = 8-5; 5 = 9-4; 4 = 9-5; 4+5 = 9;  5-4 = 9-8; 9-5 = 8-4; 9-4 = 8-3; 3*(9-5) = 4+8;

30+50 =  80; 30 = 80-50; 50 = 80-30; 50 = 90-40; 40 = 90-50; 40+50 = 90; 50-40 = 90-80; 90-50 = 80-40; 90-40 = 80-30