Question

3. Aflaţi pe x din: a) (x - 36): 3 = 36; b) (27 + 2x): 27 = 27; c) (350+ x). 16 = 8 224. d) 34-2. (2 660 + 76:x): 893 = 28; e) 51 - (2660: 76 + x): 23 = 28; f) (100 - X:76). 35 + 1 = 876; g) 54:52 +5 (552 - x) = 53.



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Answer 1

Răspuns:

Aflaţi pe x din: a) (x - 36): 3 = 36;

x-36=12 =>x=48

b) (27 + 2x): 27 = 27. 27+2x=1 =>x=-26/2=-13

; c) (350+ x). 16 = 8 224. (350+x)=514

x=164

d) 34-2. (2 660 + 76:x): 893 = 28

2 660 + 76:x = (28-34)893:2=-6:2×893

34-(76:x+2660)×1/893=28

34-2(140x+4)=28 (280x+8/47x=-6

280x-282x=-8. -2x=-8. x=4

; e) 51 - (2660: 76 + x): 23 = 28;

51-(35+x):23=53. 1173-(35+x)=1219-x=1219-1138

-x=81. x= -81

f) (100 - X:76). 35 + 1 = 876;

3500-35x+1=876

-35x=66576-266076

x=5700

g) 54:52 +5 (552 - x) = 53.

5x=53-71787/26 =>x=70409/130