Question

978-a-a-219=276+294 ajutor

Answer 1

Răspuns

Explicație pas cu pas:

978-a-a-219=276+294

978-2a-219=276+294

-2a+978-219=276+294

-2a+759=276+294

-2a+759= 570

-2a+759-759=570-759

-2a=-189

$\frac{-2a}{-2} =\frac{-189}{-2}$

a=$\frac{189}{2}$

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