Question

45-a=13,69-b=45,78-c=54,48-d=14

Answer 1

Explicație pas cu pas:

45-a=13

a=45-13

a=32

v:45-32=13

69-b=45

b=69-45

b=24

v:69-24=45

78-c=54

c=78-54

c=24

v:78-24=53

48-d=14

d=48-14

d=34

v:48-34=14

Answer 2

Explicație pas cu pas:

45-a=13

-> a = 45-13

a= 32

69-b=45

->b=69-45

b=24

78-c=54

c=78-54

c=24

48-d=14

d=48-14

d=34