Yes it is and well done.
2x+4-x = 4x-5 2x-x-4x = -5-4 -3x = -9 x = 3
2x+5=3x+1 -x=-4 x=4
2x - 1 = 3x + 4 Subtract 2x from both sides: - 1 = x + 4 Subtract 4 from both sides: -5 = x
2x-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 - 6 = 4 2x = 4 + 6 = 10 x = 10/2 = 5 ∴ x = 5
Yes it is and well done.
2x + 5 = 13 2x = 8 2x/2 = 8/2 x=4
2x -6 = 4 then 2x = 4 +6 x=10/2 = 5
x = 5
2x+4-x = 4x-5 2x-x-4x = -5-4 -3x = -9 x = 3
2x+5=3x+1 -x=-4 x=4
2x - 1 = 3x + 4 Subtract 2x from both sides: - 1 = x + 4 Subtract 4 from both sides: -5 = x
7x=2x-4 5x=-4 x=-4/5
2x-4
If x=4... then 'y' MUST equal 3 !