Question

7. Află valoarea lui x din egalităţile:
(x x 2-40) : (32:8) = 5;
(48 - x): 2-9:3+5 = 10;
36 + 6 x 9 - (x:3 + 15)= 42.☆HELP☆​

Answer 1

Răspuns:

cred ca asa , uitete dupa raspunsuri )

Answer 2

Răspuns:

(x x 2-40) : (32:8) = 5

(x x2-40):4=5

(x x2-40)=5x4

x X2-40=20

x X2=20+40

x x 2=60

x=60:2

x=30

(48 - x): 2-9:3+5 = 10

(48-x):2-3+5=10

(48-x):2-3=10-5

(48-x):2-3=5

(48-x):2=5+3

(48-x):2=8

(48-x)=8x2

48-x=16

x=48-16

x=32

36 + 6 x 9 - (x:3 + 15)= 42

36+54-(x:3+15)=42

90-(x:3+15)=42

(x:3+15)=90-42

x:3+15=48

x:3=48-15

x:3=33

x=33x3

x=99