Question

0.8-4x=-0.4y 6x+0.4y=4.2 Which of the following shows the system with like terms aligned? 4x - 0.4y = -0.8 6x + 0.4y = 4.2 -4x + 0.4y = 0.8 6x + 0.4y = 4.2 -4x + 0.4y = -0.8 6x + 0.4y = 4.2 -4x + 0.4y = -0.8 6x - 0.4y = 4.2

Answer 1

The answer is the 3rd option

Step-by-step explanation:

just got it right on the quiz

Answer 2

Answer: The correct option is option third .

Step-by-step explanation:

The given equation are,

`0.8-4x=-0.4y\\6x+0.4y=4.2`

In the second equation the like terms are aligned, therefore, we have to aligened only first equation.

The first equation is,

`0.8-4x=-0.4y`

Subtract 0.8 from both the sides.

`0.8-4x-0.8=-0.4y-0.8`

`-4x=-0.4y-0.8`

Add 0.4y on both the sides.

`-4x+0.4y=-0.4y-0.8+0.4y`

`-4x+0.4y=-0.8`

So, after aligned the system of equation have two equations.

`-4x+0.4y=-0.8`

`6x+0.4y=4.2`

Both equation are show in third option, So third option is correct.