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Need help with following questions

2x+5=2x-4

2x+6=15x-7

2x+6=8+2x

x+2y=5=x+3y=8

User Fmalina
by
8.2k points

1 Answer

2 votes

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).

User Jumoel
by
8.5k points

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