Given that M is not equal to 3, what is the solution of the equation MX - 3 = 3x? | Math enthusiast | Mathematical art

Given that M is not equal to 3, what is the solution of the equation MX - 3 = 3x?

mx-3=3x
mx-3x=3
(m-3)x=3
If M is not equal to 3, then M-3 is not equal to 0
The solution is x = 3 / (M-3)

Given that the equation (x minus 1) m is equal to x minus 1, and M is not equal to 1, try to find 2x minus (3x minus x minus 20) plus 1

m(x-1)=(x-1)
∴(m-1)(x-1)=0
∵ m is not equal to 1
∴x=1
2 x minus (3 x minus x minus 20) plus 1
=2-（3-1-20)+1
=2+18+1
=21

If X1 and X2 are the two roots of the equation 4x & # 178; - 7x-3 = 0, then X1 & # 178; + x2 & # 178; =?, please write it simply and easily

Weida theorem, you know (x1 + x2 = - B / A, x1x2 = C / a)
So X1 & # 178; + x2 & # 178; = (x1 + x2) &# 178; - 2x1x2
That is, X1 & # 178; + x2 & # 178; = (7 / 4) & # 178; - 2 (- 4 / 3)
=73/16

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