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Q: Solve this system x - y equals 8 2x plus y equals 7?

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Related questions

x=35

x = 4 and y = 0

y= -2x

3

2x+a=p 2x=p-a x=.5p-.5a

many solutions

(2,3)

36

8

4+ X equals 2X. Subtract X from both sides. Four equals X

(3,3)

You cannot solve one equation in two unknowns.

2x+3 = 9x 3 = 9x-2x = 7x 7x = 3 x = 3/7

(2x)ysquared

If: x+1+2x = 1x+5 Then: x = 2

x = 3 and y = 3 Form a simultaneous equation and solve by elimination.

X=6

The solutions are: x = -2 and y = 4

X = 0 (zero) Y = -1 (neg 1)

Yes and it works out that x = 3 and y = 4

2x + 2x + 146 + 26 = 172 4x + 172 = 172 4x = 0 x = 0

y=5x+2 if y equals -4

22+2x = 37+6+x 2x-x = 37+6-22 x = 21

You need three independent equations to solve for three unknown variables.

Y=15/(2c+2x)