Bantu jawab pake cara

1. (40×35)-(-75)÷(-15)

=1400 – 5

=1395

2. F : a : h = 4:1:5

h-a = 320

f+a+h = ?

=(4+1+5) ÷ (5-1) x 320

=10 ÷ 4 × 320

= 800