Question

tìm x \(\in\)Z biết

a) 34+(9-21)=3417-(x+341)

b)(15-x)+(x-12)=7-(-8+x

c) x-{55-[49+(-28-x)]}=13-{47+[25-(32-x)]}

d) -7+lx+4l=-3

e) lx-10l-(-12)=4

 

Answer 1

34 + (9-21)=3417-(x+341)

22 = 3417-(x+341)

​3417-(x+341)=22 ​

​x+341=3417-22

​x+341=3395

​x=3395-341 ; x =3054

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Answer 2

Xin lỗi Quảng Bùi Quỳnh Trang, tớ lỡ bấm vào sai rồi

I'm sorry

Answer 3

lx-10l-(-12)=4

=lx-10l+12=4

=x-10       =4-12

=lx-10l      =-8

cha ! tiep theo minh tac ti rui .Phan truoc khong biet dung khong

Answer 4

minh biet roi

lx-10l - (-12)=4

lx-10l +12 =4

lx-10l       =4-12

lx-10l        =-8

x              = -8 +10

x              =2