Question

1)Resolva as equações:

a) 1 + a = 8

b) 5 - y = 1

c) 4 + z = 15

d 16 - c = 11

e) 2 + d = 14

f) 22 - e = 13
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Answer 1

A) 1+a=8

a=8-1

a=7

B)5-y=1

-y=1-5

-y= -4

-y= -4 (-1)

y=4

C)4+z=15

z=15-4

z=11

D)16-c=11

-c=11-16

-c= -5

-c= -5 (-1)

c=5

E)2+d=14

d=14-2

d=12

F)22-e=13

-e=13-22

-e= -9

-e= -9 (-1)

e=9