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5(x + 12) = 30
x - 24 = 4x,


Răspuns :

5x+60=30<=> 5x= -30 <=> x= -6 ; x-24=4x<=> -24=4x-x <=> -24=3x <=> x= -24 :3 <=> x=-8
1)=5x+60=30
5x=60-30
5x=30
x=30:5
x=6

2)=4x+x=24
5x=24
x=24:5
x=4,8