Answer:
a) no solution; b) x = 1; c) no solution; d) no solution
Explanation:
Next time, please be more specific regarding what kind of help you want. In this case, it'd be "Solve for x."
2x+5=2x-4 has the term 2x on both sides; we can eliminate this by subtracting 2x from both sides. But this leads to 5 = -4, which is never true. This equation has no solution.
2x+6=15x-7 can be rewritten as 13 = 13x. Dividing both sides by 13, we get x = 1. The solution is x = 1.
2x+6=8+2x is similar to 2x+5=2x-4 in that both sides have the "2x" term, and 6≠8. No solution.
x+2y=5=x+3y=8 has two variables (x and y).
Subtracting 2y from both sides results in: x = 5 = x+y = 8. This is not possible, because it states that 5 = 8. No solution (or possible mistake in copying down this problem).