Q: Substituiotion method to find the value of y y equals 2x plus 5 x plus y equals 4?

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That depends what either the value of a or the value of b is.

Solve this simultaneous equation by the elimination method: x+y = 12 x-y = 4 Add both equations together: 2x = 16 Divide both sides by 2 to find the value of x: x = 8 Substitute the value of x into the original equations to find the value of y: Therefore: x = 8 and y = 4

That would be 10

2

p=3 !

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Solve this simultaneous equation by the elimination method: x+y = 12 x-y = 4 Add both equations together: 2x = 16 Divide both sides by 2 to find the value of x: x = 8 Substitute the value of x into the original equations to find the value of y: Therefore: x = 8 and y = 4

5s = 0

That would be 10

2

p=3 !