Solve the equations 4s-3t-29 = 0, 6s-5t-23 = 0 4s-3t-29=0 ① 6s-5t-23=0 ② There should be a process

Solve the equations 4s-3t-29 = 0, 6s-5t-23 = 0 4s-3t-29=0 ① 6s-5t-23=0 ② There should be a process

①×3 12s－9t－87＝0③
②×2 12s－10t－46＝0④
③－④ t－41＝0
t=41
Substituting t = 41 into ③
s＝38
The solution is
t＝41
s＝38

The following equations are solved by substitution method: (1) 3S = 2T, 6S + T = 10

From: 6S + T = 10
--> 2*3s+t=10
--> 2*2t+t=10
--> 5t=10
--> t=2 s=4/3

How to solve the two binary linear equations {3s-7t = 16 - 6S + T = - 19 {2S + 3T = 34s-9t = 1?

3s-7t = 16, ① - 6S + T = - 19, ② * 2 get 6s-14t = 32, ③ + ② get - 13T = 13T = - 1, ④ bring in ① 3S + 7 = 16S = 3, so t = - 1, s = 32S + 3T = 3, ① 4s-9t = 1, ② * 2 get 4S + 6T = 6, ③ - ② get 15t = 5T = 1 / 3, ④ substitute ① 2S + 1 = 3S = 1, so t = 1 / 3, s = 1, if you have any questions, please continue to ask

From now on, you are the only one in my heart without her?

I only have eyes for you from now on, not her.only I only care about you or I'll keep no one but you in my heart

How many hectares is 10000 mu
How to convert?

1 ha = 15 mu
10000/15=2000/3=667
Ten thousand mu is equal to 667 hectares

If the m power of a is half and the 2n power of B is one third, then the (2m + 6N) power of a =?

a^m=1/2
a^(2n)=1/3
a^(2m+6n)
=a^(2m)*a^(6n)
=(a^m)^2*[a^(2n)]^3
=(1/2)^2*(1/3)^3
=1/4*1/27
=1/108

There is no library nearby
Is there a library nearby.

Is there a library nearby?

Try to explain: the square difference of two consecutive odd numbers is twice the sum of the two consecutive odd numbers

It is proved that: let two continuous odd numbers be 2N-1, 2n + 1 (n is an integer), (2n + 1) 2 - (2n-1) 2 = (2n + 1 + 2n-1) (2n + 1-2n + 1) = 2 [(2n + 1) + (2n-1)], that is, the square difference of two continuous odd numbers is twice the sum of the two continuous odd numbers

U = Y / x, why dy / DX = u + X * Du / DX, powerless,

This is a differential problem of composite function, which can be regarded as y = Xu. That is to say, y is also a function containing x, so
U is equivalent to u (x)
y=x' * u + x * u'=u+x * du/dx

69.6 △ 2.4 + 17.9215.8 × 10.1 + 0.626.8 - 20.16 △ 7.2, which can be easily calculated

69.6÷2.4+17.92
=29+17.92
=46.92
15.8×10.1+0.62
=15.8x(10+0.1)+0.62
=158+1.58+0.62
=158+2.2
=160.2
6.8-20.16÷7.2
=6.8-2.8
=4