Which equations have one solution? A: 1/3x + 3 = 26 + 6/18x - 23
B: x + 3 + 3x = -3 + 4x + 6
C: (1/5 + 1/4x) - 2x = x - 1
D: 2(4x + 3) + 2x = 5(2x + 3)
Pls help, math is my worst subject.

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.

Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite. x + y = 5 x + y = 7 {} 1 solution infinite