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(2x+3)(5x+4) = (3x+2)(6x+6)
10x^2+ 8x+ 15x+ 12= 18x^2 +18x +12x +12
-8x^2 -7x= 0
x(-8x -7)= 0
x=0 ∨ -8x -7= 0
-8x= 7
x= -