5
7z - 3 = 11 + 3z ie 7z -3z = 11 + 3 4z = 14 z = 3.5 Check: (7 x 3.5) - 3; 11 + (3 x 3.5) 24.5 - 3 = 11 + 10.5 21.5 = 21.5 QED
5x + 3y = 7z 5, 3, and 7 are coefficients and they are integers, they are integer coefficients
Assuming that x, y and z are all prime, then they are 1, 7, x, y, z, 7x, 7y, 7z, xy, xz, yz, 7xy, 7xz, 7yz, xyz, 7xyz.
Answerno. A system with two equations and three variable is known as a parametric equation and can be simplified, generally, to one equation with two variables.You always need a number of equations equal to or greater than the number of variables you have to find any of the variables.If you have more varibles than equations you can eliminate a number of variables equal to the number of equations minus one.Edit: While this is correct, you can fudge an answer using a pseudoinverse. This minimizes one of the values, and then you can approximate the other two. Suppose you have:3x + 2y + 4z = 0x + 8y + 7z = 3You can call this A*b = y, whereA = [3,2,4;1,8,7]b = [x;y;z]y= [0;3]Then you can sayb=ay, wherea=A'(A*A')^(-1)' indicated the transpose, and ^-1 indicates the inverse.More explanation can be found at http://neurotheory.columbia.edu/~ken/math-notes/sabes.pdf
7z+9 = 72 7z = 72-9 7z = 63 z = 9
7z + 6s + s = 7z + 7s This can then be factorised using 7 as the factor: 7z + 7s = 7(z + s)
7z - 9.4 = 11.6 7z = 11.6 + 9.4 = 21 z = 21/7 = 3
x = Y + 7z
7+7z 7=7*1 7z=7*z 7(1+z) is factored form
2z+9.75-7z=-5.15
z / (1/7) = 7z.
Zx(3+4)= Zx7 = 7z the answer is 7z
The answer to 2Z plus 9.75 subtract 7Z subtract equals 14.90. This is a math problem.
If Z = 3, then (9 + 7Z) = [ 9 + 7(3) ] = 9 + 21 = 30
,.7z
You can use rar or 7z converter tool online or download a free version