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7 ( 8 - × ) + 3 ( 8 - × ) + 2 = 62

Răspuns :

7(8-x)+3(8-x)+2=62⇒56-7x+24-3x+2=62⇒-10x+92=62⇒-10x=-92+62⇒-10x=-30⇒x=-30/-10⇒x=3
succes
10x=-92+62⇒-10x=-30⇒x=-30/-10⇒x=3