Question

3)a+(a-10)-15+a=
4)-4(6-4)+7(6+2)=​

Answer 1

Ответ:

1) -2,4a*(-5b) = 12ab

2) 9a-a-8b+3b = 8a-5b

3) a+(a-10)-15+a = a+a-10-15+a = 3a-25

4) -4(6-4)+7(6+2) = -24+16+42+14 = 48