Solve the following:
2x - 7 = x + 3
4 3

Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

What is the solution of log2  (3x  -  7)  =  3? 4 5

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76