Question

D) x+(+20)=12 preciso de ajuda em todas

Answer 1

Resposta:

ESSAS SAO DA A,C,E,G,I

$\left(12\right)+X=10\quad :\quad X=-2\\X+\left(-20\right)=12\quad :\quad X=32\\X+\left(-15\right)=0\quad :\quad X=15\\-7+X=-15\quad :\quad X=-8\\\\-10+X=-21\quad :\quad X=-11$

ESSAS SAO DA B,D,F,H,J

$\left(-12\right)+X=10\quad :\quad X=22\\\\X+\left(20\right)=12\quad :\quad X=-8\\\\X-\left(-8\right)=-2\quad :\quad X=-10\\-\left(-3\right)+X=0\quad :\quad X=-3\\\\-3-\left(X\right)=7\quad :\quad X=-10$