Question

calculat a)-5×12+(-5)×17= b )9×(-18)+9×22= c)(-23)×(-15)-28-28×16= d)54-35-74×(-35)=​

Answer 1

Răspuns:

a) -5×12+(-5)×17= -60-85=-145

b) 9×(-18)+9×22= -162+198=36

c) (-23)×(-15)-28-28×16= 345-28-448=317-448=-131

d) 54-35-74×(-35)=​54-35+2590=49+2590=2609

Answer 2

Răspuns:

Explicație pas cu pas:

a)-5×12+(-5)×17= -5×(12+17) = -5×29 = -145

b )9×(-18)+9×22= 9×(-18+22) = 9×4 = 36

c)(-23)×(-15)-28-28×16= 345 - 28 - 448 = 345 - 476 = -131

d)54-35-74×(-35)=​19 + 2590 = 2609