a: =65508

b: 596134

c: =104705

d: =14756

 =65508

b: 596134

c: =104705

d: =14756

a=65508

b=596134

c=104705

d=14756

Kết quả: 372810

???

a)237x24=5688

b)16050:75=214 nhé

a) 2316 + 115 = 2431

b) (-315)+ (-15) = -330

c) (-215)+215 = 0

d) (-200)+200 = 0

a) 2316 + 115 = 2431

b) ( - 315 ) + ( - 15 ) = - 330

c) ( - 215 ) + 215 = 0

d) ( - 200 ) + 200 = 0

a.2471

b.-330

c.0

d.0

\(6,48\times0,125=0,81\)
\(35,941:1,27=28,3\)

\(1734:17=102x17:17=102x1=102\)

\(\left(x-7\right)\)\(2-26=13x17-13x7=13\left(17-7\right)=13x10=130\)

\(\left(x-7\right)2=130+26=156\)

\(x-7=156:2=78\)

\(x=78+7=85\)

\(=>x=85\)

\(195-\left(15x+27\right)=4212:39=108\)

\(15x+27=195-108=87\)

\(15x=87-27=60\)

\(x=60:15=4\)

\(=>x=4\)

- Tính nhẩm
1734 : 17 = 102

- Tìm x
(x - 7) .2 - 26 = 13.17 - 13.7
(x - 7) .2 - 26 = 13.(17 - 7)
(x - 7) .2 - 26 = 13. 10
(x - 7) .2 - 26 = 130
(x - 7) .2         = 130 + 26
(x - 7) .2         = 156
(x - 7)             = 156 : 2
(x - 7)             = 78
 x                    = 78 + 7
 x                    = 85
___________________
195 - (15x + 27) .39 = 4212         (dấu "[" đặt ở đấu tiên nên không cần thiết)
         (15x + 27) .39 = 195 - 4212
         (15x + 27) .39 = -4017
         (15x + 27)       = -4017 : 39
         (15x + 27)       = -103
          15x                 = -103 -27
          15x                 = -130
              x                 = -130 : 15
              x                 = -26/3
 

\(=\dfrac{27}{5}\cdot\dfrac{30}{7}+\dfrac{40}{7}\cdot\dfrac{37}{7}=\dfrac{2614}{49}\)

\(c)\)

\(5\dfrac{2}{5}\times4\dfrac{2}{7}+5\dfrac{5}{7}\times5\dfrac{2}{7}\)

\(=\dfrac{27}{5}\times\dfrac{30}{7}+\dfrac{40}{7}\times\dfrac{37}{7}\)

\(=\dfrac{162}{7}+\dfrac{40}{7}\times\dfrac{37}{7}\)

\(=\dfrac{162}{7}+\dfrac{1480}{49}\)

\(=\dfrac{1134}{49}+\dfrac{1480}{49}\)

\(=\dfrac{2614}{49}\)