Question

2 1/3(a+6)-7 2/3(3-a) при а =-0,7
ОЧЕНЬ НАДО 10 БАЛЛОВ

Answer 1

$frac{21}{3} ( - 0.7 + 6) - frac{72}{3} (3 + 0.7) = 7 times 5.3 - 24 times 3.7 = 37.1 - 88.8 = - 51.7$

Answer 2

7(a + 6) - 23(3 - a)
7a + 42 - 69 + 23a
30a + (-27)