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Aflati valoarea numerică a lui × stiind ca 20000 - ( 3 x + 100 ) - 19 + 1500 = 2500
dau coroana rapid​


Răspuns :

Răspuns:

20000-(3x +100)-19 +1500=2500

20000-(3× +100)-19 =2500-1500

20000-(3× +100)-19=1000

20000-(3× +100)=1000 + 19

20000-(3× +100)=1019

3× +100=20000-1019

3× +100=18981

3× =18981-100

3×=18881

×=18881: 3

×=6293,(6)