2x = 5
x = 2.5
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2x + 5 = 13 2x = 8 2x/2 = 8/2 x=4
y=2x-4 y=2x-5 y=1 1=2x-4 -2x = -5 x=2/5 the solution is (x,y) = (2/5,1)
2x - 5 = 11 2x = 11 + 5 2x = 16 2x /2 = 16 /2 x = 8
2x + 5 = 25 2x = 20x = 10
4x - 7 = 2x + 5 2x - 7 = 5 2x = 12 x = 6.