x = 861

a: =979-553=426

c: =11568

a) (4895 - 2765) : 5 = 426

b) 7236 : ( 3 x 4) = 7236 : 12 = 603

c) ( 964 x 48) : 4 = 11 568

d) (371 x 56) : 7 = 2968

a) 4895 : 5 - 2765 : 5 
= 979 - 553
= 426

b) 7236 : (3 x 4)
= 7236 : 12
= 603

 c) (964 x 48) : 4
= 46272 : 4
= 11568

 d) (371 x 56) : 7
= 20776 : 7
= 2968
 

a=e

c=d

b=g

Dễ thấy \(4\times2145=\left(2100+45\right)\times4\\ 3964\times6=\left(4+2\right)\times\left(3000+964\right)\\ 10287\times5=\left(3+2\right)\times10287\)

Vậy a = e, b = g, c = d.

a) 4 x 2145 = d) (2100 + 45) x 4 (a = d)

c) 3964 x 4 = (4x 2) x(3000 + 964) (c = g)

e) 10287 x 5 = b) (3 + 2) x 10287 (b = e)

a) 4 x 2145 = d) (2100 + 45) x 4 (d)

c) 3964 x 4 = (4x 2) x(3000 + 964) (g)

e) 10287 x 5 = b) (3 + 2) x 10287 (b)

Đáp án cần chọn là: B

x=516

x=31669

x=\(\frac{23}{3}\)

x=\(\frac{25}{6}\)

x+453-13440:14=964

x+453-960=964

x+453=964+960=1924

x=1924-453=1471

x-37x11=154x203

x-407=31262

x=31262+407=31669

4-\(\frac{1}{2}\)x=\(\frac{1}{6}\)

\(\frac{1}{2}\)x=4-\(\frac{1}{6}\)=\(\frac{23}{6}\)

x=\(\frac{23}{6}\):\(\frac{1}{2}\)=\(\frac{23}{3}\)

\(\frac{1}{3}\)+x=\(\frac{3}{2}\)x3=\(\frac{9}{2}\)

x=\(\frac{9}{2}\)-\(\frac{1}{3}\)=\(\frac{25}{6}\)

456+964*66=

456+63624

=64060

64060 nha bn

64060 nha ban

100001

100001

99 964 + 37 = 100 001