Question

Rezolvati va rog mult dau coroana ​

Answer 1

Răspuns:

4. a) x= -170

b) y= 1992

c) z= -747

5. a) x=27

b) y= -11

c) z=6

6. a) x=160

b) y=380

c) z=342

7. a) x= -24

b) y=100

c) z= -20

Explicație pas cu pas:

4. a) x= -100-70 =>

=> x= -170

b) y= 2000-8 =>

=> y= 1992

c) z= -718-29 =>

=> z= -747

5. a) 3x÷3=81÷3 =>

=> x=81÷3 =>

=> x=27

b) -11y=121 =>

=> y= -11

c) -35z= -210 /÷(-35) =>

=> z=6

6. a) -x÷8=-20 =>

=> - 1 supra 8 x=-20 /×(-8) =>

=> x=160

b) 1 supra 38 y=10 /×38 =>

=> y= 380

c) -z÷19=-18 =>

=> - 1 supra 19 z=-18 /×(-19) =>

=> z= 342

7. a) 3x=-72 /÷3 =>

=> x=-24

b) -8y=-800 /÷(-8) =>

=> y=100

c) 22z=-440 /÷22 =>

=> z= -20