Question

Решите примеры. Желательно подробно

Answer 1

-14x + 7 + 24x + 4 = 10x + 11
При x = 4:
10x + 11 = 40 + 11 = 51


12x + 12 - 12x - 6 = 6


-18x + 72 + 18x - 20 = 52

Answer 2

г)
-7(8-1)+4(24+1)=-7×7+4×25=-49+100=51
д)
4(3×5 3/11+3)-3(4×5 3/11+2)=4×18 9/11-3×23 1/11=75 3/11-69 3/11=6
е)
-9(2×-9 6/7-8)+2(9×-9 6/7-10)=-9×-27 5/7+2×-98 5/7=249 3/7+-197 3/7=52