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Solutia ecuatiei 9x-5(x 4)=7(x-8)-24+x= ?

Răspuns :

9x - 5 * 4 = 7(x - 8) - 24 + x
9x - 20 = 7x - 56 - 24 + x
9x - 7x - x = 20 - 56 - 24
x = - 60
9x-5x-20=7x-56-24+x     4x-20=8x-80     80-20=8x-4x     60=4x    x=60:4   x=15