Question

determină valoarea necunoscutei​

Answer 1

118. ) a+a+a=21+11

a+a+a=33

3a=33:3

a=11

x+x+x=74-11

x+x+x=63

3x=63:3

x=21

z+z+z=98-4 ?( da cu rest )

a+a+a=60-30

3a=30

a=30:3

a=10

y+y+y=59-20

3y=39

y=39:3

y=13

z+z+z=30+60

3z=90

z=90:3

z=30

x+x+x=60+6

3x=66

x=66:3

x=22

y+y+y=3+30

3y=33:3

y=11

b+b+b=76-40

3b=36

b=36:3

b=12

_________________

119.) 5+3=a => a=8

a+10=m

8+10=m => m=18

m-6=c

18-6=c. => c=12

c+4=n

12+4=n => n=16

n-2=r

16-2=r => r= 14

Answer 2

Răspuns:

21+11=33 33:3=11(a=11) a=10 x=22

y=13 y=11

x=21

z=? z=30 b=12

119)a=8

m=8+10=18

c=18-6=12

n=12+4=16

r=16-2=14

u=14+15=29