Best Answer

"Solve" means find the numbers that 'x' and 'y' represent.

Since there are two of them, you need two equations to find them.

With only one equation, there are an infinite number of correct answers.

Here are a few of them. For each pair of numbers, 4 times the first one

minus 5 times the second one adds up to 20.

5, 0

6, 0.8

7, 1.6

8, 2.4

9, 3.2

10, 4

Q: How do you solve 4x-5y equals 20?

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divide 20 by 10 which equals 2 the times 2 by 2 which equals 4

36 -20 = 16

To solve for x, we'd have to know what this expression equals.

6x-20 = 8x 6x-8x = 20 -2x = 20 x = -10

40

Related questions

divide 20 by 10 which equals 2 the times 2 by 2 which equals 4

x = 5

(20 - x)/5

36 -20 = 16

To solve for x, we'd have to know what this expression equals.

25

20

6x-20 = 8x 6x-8x = 20 -2x = 20 x = -10

20

40

To solve this one, subtract 50 from 180 and you'll have your answer.

-7m + 20 = -17m - 1010m = -30m = -3