Question

-7x+18х-5x= -45 -3x+2х-7x=-4х-20

Answer 1

1)7x-18x+5x=45
-6x=45
x=45/-6
x=-7,5
2)3x-2x+7x=4x+20
8x=4x+20
8x-4x=20
4x=20
x=5

Answer 2

Let's simplify each equation by combining like terms:

-7x + 18x - 5x = -45 6x = -45 x = -7.5

-3x + 2x - 7x = -4x - 20 -8x = -20 x = 2.5

Therefore, the solution for the system of equations is x = -7.5 and x = 2.5, which is not possible since a system of linear equations with two variables should only have one unique solution. This means that the system is inconsistent and has no solution.