Решите примеры 1)3(х+4)-х-4 2)х+4-5(2-х)-(5+1)х-5

Question

Решите примеры
1)3(х+4)-х-4
2)х+4-5(2-х)-(5+1)х-5

Answer 1

1) =3x+12-x-4=2x+8
2x+8=0
2x=-8
x=-4
2)=x+4-10+5x-(5x+x)-5=6x-6-5x-x-5=6x-11-6x= -11

Answer 2

1. 1)3*х+3*4-х-4
2) 3х+12-х-4
3) 3х+х=12+4
4) 4х=16х
х=4