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4x-40=2/5(3x+40)
4X-40＝2／5（3X+40）
4X-40＝1.2X+16
2.8X＝56
X＝20
(3x-5) * (4x-3) = 80 for X
From the question
12x^2-29x-65=0
∴x={29±√[29^2-4×12×(-65)]}÷(2×12)=（29±√3961）/24
This is the shrimp count*
Three times of a number plus four times of the number is seven times of the number. 3x () + 4x () = 7x（
Three times of a number plus four times of the number is seven times of the number. 3x () + 4x () = 7x ()
Three times of one plus four times of one is not seven times of one? I think so
Solving the equation 2x + y = 5 x-2y = 1 by image
Brilliant twinkle
Drawing
2X + y = 5, y = - 2x + 5 over (0,5) and (5 / 2,0)
X-2y = 1, y = (1 / 2) X-1 / 2 over (0, - 1 / 2) and (1,0)
If you look at the intersection of these two lines, that's the solution of the equation
The solution is x = 11 / 5, y = 3 / 5
I hope my answer will help you
I wish you a bright future and awesome things!
Factorization x ^ 2 + 7x-8
x^2+7x-8=(x-1)(x+8)
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