Question

Va rog .... 4 5 6 Dau coroana !

Answer 1

Răspuns:

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

( -5320-152/x):893= -6

-5320-152/x=-5 358

152(35+1/x)=5358

35+1/x= 32.25

1/x=-2.75 => x=-0.36

B) 51-(2660×76+x):23=28

-(202 160+x)= -23/23

202 160+x= 1

x= -202 159

5. a) (100-x:76)×35+1=876

100-x:76=875:35

-x:76= -75 => x=75×76= 5 700

b) ((100+x):75-1)×35=875

(100+x):75=25

100+x= 1 875

x= 1775

6. a) 5^4:5^2+5(55-x)=5^3

5^2+5(55-x)=5^3

25+ 275-5x= 75

-5x=-225 => x=45

b) 25^14:25^12-5(55+x/5)=25

25^2 - 275- x= 25

-x=25-625+275 => x=325