Question

Can someone please help me out? I don’t really understand the problem.

Answer 1

x = 6 and y = 10

Explanation:

Substract (-5x+3y=0) from (7x-4y=2)

`\sf \: - 5x + 3y = 0 \\ \sf \: \: \: \: 7x - 4y = 2 \\ = = = = = = = = \\ \sf2x - 1y = 2 \\ = = = = = = = = =`

Let's solve your system by elimination.

7x−4y=2;2x−1y=2

Multiply the second equation by -4, then add the equations together.

(7x−4y=2)

−4(2x−1y=2)

Becomes:

7x−4y=2

−8x+4y=−8

Add these equations to eliminate y:

−x=−6

Then solve−x=−6for x:

−x=−6

−x/−1 = −6/−1

(Divide both sides by -1)

x=6

Now that we've found x let's plug it back in to solve for y.

Write down an original equation:

7x−4y=2

Substitute6forxin7x−4y=2:

(7)(6)−4y=2

−4y+42=2(Simplify both sides of the equation)

−4y+42+−42=2+−42(Add -42 to both sides)

−4y=−40

−4y/−4 = −40/−4

(Divide both sides by -4)

y=10

Answer 2

ok

Explanation:

-2x+9=2

dive answer is 3