Question

Tìm x biết:

a/ -28 - 5x = - 118

b/ -38 + 8x = - 102

Answer 1

a. -28-5x=-118

=> 5x=-28-(-118)

=> 5x=-28+118

=> 5x=90

=> x=90:5

Vậy x=18.

b. -38+8x=-102

=> 8x=-102-(-38)

=> 8x=-102+38

=> 8x=-64

=> x=-64:8

Vậy x=-8.

Answer 2

a)x=18

b)x=8

Tick cho mình nha

Answer 3

a. -28-5x=-118

=> 5x=-28-(-118)

=> 5x=-28+118

=> 5x=90

=> x=90:5

Vậy x=18.

b. -38+8x=-102

=> 8x=-102-(-38)

=> 8x=-102+38

=> 8x=-64

=> x=-64:8

Vậy x=-8.

Answer 4

a.-28-5x=-118

=> 5x=-28-(=118)

=> 5x=-28+118

=> 5x=90

=>x=90:5

vậy x=18

b.-38+8x=-102

=>8x=-102-(-38)

=>8x=-102+38

=>8x=-64

=>8x=64:8

vậy x=-8