Question

Tìm x biết (2600+6400)-3.x=1200

Answer 1

(2600+6400)-3x=1200

10 000-3x=1200

3x=9000-1200

3x=7 800

x=7800/3

x=2600

Answer 2

(2600+6400)-3x=1200

<=>9000-3x=1200

<=>3x=9000-1200

<=>3x=7800

<=>x=2600

Answer 3

[(6.x-72):2-84].28=5628