Tìm a biết a * 3 + a * 6 - a - 1968 = 3680
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có:a.3 + a.6-a-1968=3680
=>a.(3+6)-a-1968=3680
=>a.9-a-1968=3680
=>a.9-a=3680+1968
=>a.8=5648
=>a=5648:8
=>a=706
![](https://rs.olm.vn/images/avt/0.png?1311)
a x [3+6-1]-1968=3680
a x 8 -1968=3680
ax8=3680+1968
ax8=5648
a=706
![](https://rs.olm.vn/images/avt/0.png?1311)
=\(3a+6a-1a=3680+1968\)
=\(3a+6a+1a=5648\)
\(a\left(3+6+1\right)=5648\)
\(10a=5648\)
\(a=564,8\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a x 3 + a x 6 - a -1968 = 3680
a x ( 3 + 6 ) - a -1968 = 3680
a x 9 - a - 1968 = 3680
a x 8 - 1968 = 3680
a x 8 = 3680 + 1968
a x 8 = 5648
a = 5648 : 8
a = 706
a x 3 + a x 6 - a -1968 = 3680
a x ( 3 + 6 ) - a -1968 = 3680
a x 9 - a - 1968 = 3680
a x 8 - 1968 = 3680
a x 8 = 3680 + 1968
a x 8 = 5648
a = 5648 : 8
a = 706
![](https://rs.olm.vn/images/avt/0.png?1311)
ax3+ax6-a-1968=3680
ax3+ax6-ax1-1968=3680
ax(3+6-1)-1968=3680
ax8=3680+1968
ax8=5648
a=5648:8
a=706
a x 3 + a x 6 - a -1968 = 3680
a x ( 3 + 6 ) - a -1968 = 3680
a x 9 - a - 1968 = 3680
a x 8 - 1968 = 3680
a x 8 = 3680 + 1968
a x 8 = 5648
a = 5648 : 8
a = 706
![](https://rs.olm.vn/images/avt/0.png?1311)
a x 3 + a x 6 - a -1968 = 3680
a x ( 3 + 6 ) - a -1968 = 3680
a x 9 - a - 1968 = 3680
a x 8 - 1968 = 3680
a x 8 = 3680 + 1968
a x 8 = 5648
a = 5648 : 8
a = 706
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a. 7804 - x . 6 + 3829 = 5315
=> 11633 - x . 6 = 5315
=> x . 6 = 11633 - 5315
=> x . 6 = 6318
=> x = 6318 : 6
=> x = 1053
b. x . 23 + x . 35 - 1968 = 10270
=> x . 58 = 10270 + 1968
=> x . 58 = 12238
=> x = 12238 : 58
=> x = 211
c. 3.(x-2) - 2.(x+1) = -30
=> 3.x - 6 - 2.x - 2 = -30
=> x - 8 = -30
=> x = -30 + 8
=> x = -22
d. 42 + (3x + 7) : 2 = 25 + 34
=> 42 + (3x + 7) : 2 = 32 + 81
=> (3x + 7) : 2 = 32 + 81 - 42
=> (3x + 7) : 2 = 71
=> 3x + 7 = 71 . 2
=> 3x + 7 = 142
=> 3x = 142 - 7
=> 3x = 135
=> x = 135:3
=> x = 45
a=706
đúng mình nè!!!!!!!!