"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
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
divide 20 by 10 which equals 2 the times 2 by 2 which equals 4
x = 5
(20 - x)/5
36 -20 = 16
25
To solve for x, we'd have to know what this expression equals.
20
6x-20 = 8x 6x-8x = 20 -2x = 20 x = -10
40
-7m + 20 = -17m - 1010m = -30m = -3
The question cannot be answered because, as it appears, it makes no sense.
what is the solution of x-5y=10 and 2x-10y=20