Question

tìm x

x-7=(-14)+(-8)

Answer 1

\(x-7=-14+\left(-8\right)\)

\(\Leftrightarrow x-7=-14-8\)

\(\Leftrightarrow x-7=-22\)

\(\Leftrightarrow x=-22+7\)

\(\Leftrightarrow x=-15\)

Vậy ...

Answer 2

x - 7 = (-14) + (-8)

x - 7 = -22

x = -22 + 7

x = -15

Answer 3

x-7=(-14)+(-8)

x-7=-22

x=(-22)+7

⇒ x= -15

Answer 4

x-7=(-14)+(-8)

x-7=-22

x=-22-7

⇒ x=-15

Answer 5

x-7=(-14)+(-8)

ta có : x-7=-22

x =(-22)+7

vậy x =-15

Answer 6

x - 7 = (-14) + (-8)

x - 7 = -22

x = -22 + 7

x = -15

Vậy x = -15

Answer 7

x-7=(-14)+(-8)

x-7=-22

x = -22 +7

x = -15