Question

[Phạm như quỳnh]

tim so nguyen x biet

a,9-25=[7-x]-[25+7]

b,-26-[x-7]=0

c,30+[32-x]=10

d,2.x-18=10

e,3.x+26=5

f,/x/-5=-12+30

g,[/x/+1].[4-2x]=0

h,8+/x/=/-8/+11

i,4.[x+1]-[3x+1]=14

Answer 1

[Trần Hữu Quốc Phong]

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