Question

6. calcula
a) 4•5-3•(-2)+5•(-8)-4•(-3)
b) (10-10•[-6+5•(-4+7-3)]
c) 10-10•[-6+5•(-4+7-3)]​

Answer 1

A- 4•5-3•(-2)+5•(-8)-4•(-3)
20+6-40+12
-2

B- (10-10•[-6+5•(-4+7-3)]
10-10(-6+5x0)
10-10(-6+0)
10-10x(-6)
10+10x6
10(1+6)
10x7
70

C- 10-10•[-6+5•(-4+7-3)]
10-10(-6+5•x)
10-10(-6+0)
10-10x(-6)
10+10•6
10(1+6)
10•7
70