Question

a) 155-x=51

b) (-24).x=-120

c) 35+2(81-x)=155

Answer 1

a, x= 155 -51 <=> x=104

b.x=-120 : -24 <=> x=5

c.2(81-x)= 155 -35 

<=> 2(81-x)=120

<=> 81 - x = 60

<=> x= 21

Answer 2

Lời giải:

a.

$155-x=51$

$x=155-51=104$

b. 

$(-24)x=-120$

$x=(-120):(-24)=5$

c.

$35+2(81-x)=155$

$2(81-x)=155-35=120$

$81-x=120:2=60$

$x=81-60=21$

Answer 3

a) 155 - x=51

x= 155 - 51

x= 104

b) (-24) . x= -120

x= -120 : -24

x= 5

c) 35 + 2(81 - x) = 155

2(81 - x)= 155 -35

2(81 - x)= 120

81 - x= 120:2

81-x= 60

x= 81 - 60

x= 21