Question

(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=140

Answer 1

=> 5x+15=140

=>5x=125

=>x=25

Answer 2

\(x+1+x+2+x+3+x+4+x+5=140\)

\(5x+1+2+3+4+5=140\)

\(5x+15=140\)

\(x+3=28\)

\(x=25\)

Chúc em học tốt^^

Answer 3

5x + ( 1 + 2 + 3 + 4 + 5 ) = 140

5x + 15 = 140

5x = 140 - 15

5x = 125

x = 125 : 25

x = 5

Answer 4

mk nhầm nha

x = 125 : 5

x = 5

Answer 5

(x + 1) + (x + 2) + (x + 3) + (x + 4) + (x + 5) = 140

=> (x + x + x + x + x) + (1 + 2 + 3 + 4 + 5) = 140

=> 5.x + (1 + 5).5:2 = 140

=> 5.x + 6.5:2 = 240

=> 5.x + 3.5 = 240

=> 5.x + 15 = 240

=> 5.x = 240 - 15 = 225

=> x = 225 : 5 = 45

Answer 6

nhầm x = 25

Answer 7

(x + 1) + (x + 2) + (x + 3) + (x + 4) + (x + 5) = 140

          x + x + x + x + x + 1 + 2 + 3 + 4 + 5 = 140

                                x + x + x + x + x + 15 = 140

                                        x + x + x + x + x = 140 - 15

                                        x + x + x + x + x = 125

                                                               x = 125 : 5

                                                               x = 25

   

Answer 8

(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=140

x+x+x+x+x) + (1+2+3+4+5)    =140

                            5x +  15     =140

                             5x             =140:15

                             5x             =  125

                              x              =125:5

                              x              =   25

                     Vậy x= 25.

Answer 9

(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=140

5x + (1+2+3+4+5) = 140

5x + 15 = 140

5x = 140 - 15

5x = 125

x = 125 : 5

x = 25