Question

Tìm x biết: -7 - 5 - x = 12 + ( -5 + 8)

 

Giải hộ mk với

Answer 1

\(-7-5-x=12+\left(-5+8\right)\)

\(\Leftrightarrow-12-x=12+3\)

\(\Leftrightarrow-12-x=16\)

\(\Leftrightarrow x=-12-16\)

\(\Leftrightarrow x=-28\)

\(\text{Vậy }x=-28\)

Answer 2

 -7-5-x=12+(-5+8)

 -7-5-x=15

 5-x=-7-15

 5-x=-7+(-15)

 5-x=-(7+15)

 5-x=-22

    x=5-(-22)

    x=5+22

    x=27

 Vậy x=27