Question

2x+2y=19 and 2x-2y=5 solve using the addition method

Answer 1

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Answer 2

2x+2y=19
2x-2y=5

Add these equations and you get:

4x=24
x=6

Substitute x=6 into 2x+2y=19

(2)(6)+2y=19
12+2y=19
2y=7
y=7/2

Therefore, x=6 and y=7/2

Answer 3

2x-2y=5 .. Add 14 to both sides ... 2x-2y+14 =19... We know 2x+2y=19 .. so substituting that we get 2x-2y+14 = 2x+2y .. 2x get cancelled out we get y =14/4 and x as 24/4 ... this can simply be solved adding two equations also.

Answer 4

thanks i got another 1 using the addition methd 2x-y=8 and 4x+3y=36

Answer 5

4x+3y=36
2x-y=8 Multiply this equation by 2 and you get:

4x+3y=36
4x-2y=16 Subtract this equation from the above equation and you get:

5y=20
y=4

Substitute y=4 into 2x-y=8:

2x-y=8
2x-4=8
2x=12
x=6

Therefore, x=6 and y=4