zay12077 zay12077

11-12-2020
Mathematics

contestada

help please this is hard

help please this is hard class=

Respuesta :

mina136 mina136

11-12-2020

Answer:

Step-by-step explanation:

3. z-(-12)=15

z+12=15

-12 on both sides

z=3

4. x-(-7)=-10

x+7=-10

-7 on both sides

x=-17

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