3(28а+в)-73а+8в при а+в=7

Question

3(28а+в)-73а+8в при а+в=7

Comments

3т+35п+8(3т-п ) при т+п=4

Answer 1

3 × (28 × 3 + 4) - 73 × 3 + 8 × 4 = 77

Answer 2

84a+3b-73a+8b=11a+11b=11(a+b)=11*7=77