If you mean: 2.5x+x = 5x-3 then x = 2
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(11x - 8)(x + 3)
With difficulty because it's not an equation but an expression.
(5x + 10)(x + 3) or 5. (x + 2)(x + 3) Check with x = (say) 3 so 5 x 5 x 6 = 150; 45 + 75 + 30 = 150 OK
1.6667
x = 2 and y =-3 so the lines intersect at (2, -3)