Question

a) 12- 4 + 7 - 9 = b) 4 + 7-2-8 = c) 6 + 2-3+9 = d) 15 - 12 + 3 - 6 = e) 23 - 13 + 5 – 14 = f)7-2 + 15 - 8 = g) 54 – 28 – 11 – 5 =​

Answer 1

SOLUCIÓN PASÓ A PASÓ:

a) 12-4+7-9=

8+7-9=

15-9=

6

b)4+7−2−8

=11−2−8

=9−8

=1

c)6+2−3+9

=8−3+9

=5+9

=14

d)15−12+3−6

=3+3−6

=6−6

=0

e)23−13+5−14

=10+5−14

=15−14

=1

f)7−2+15−8

=5+15−8

=20−8

=12

g)54−28−11−5

=26−11−5

=15−5

=10