Question

B.25 -(- )=21. E.19-(- )=(-2) porfavor ayudame con esto ​

Answer 1

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$25 - ( - x) = 21 \\ 25 + x = 21 \\ 25 + x - 25 = 21 - 25 \\ x = 21 - 25 \\ x = - 4$

B= 25-(-4)=21

$19 - ( - x) = ( - 2) \\ 19 + x = - 2 \\ 19 + x - 19 = - 2 - 19 \\ x = - 2 - 19 \\ x = - 21$

E= 19-(-21)=(-2)