Question

tìm x

-10-(x-5)+(3-x)=-8

10+3*(x-1)=10+6x

mong mọi người giải giúp mình mình xin cảm ơn

Answer 1

câu a/

-10-(x-5)+(3-x)=-8

-10-x+5+3-x=-8

-2x=-8-3-5+10

-2x=-6

x=3

câu b/

10+3(x-1)=10+6x

10+3x-3=10+6x

3x-6x=10+3-10

-3x=3

x=-1

Answer 2

-10 -(x-5) + (3-x)=-8\(\Rightarrow\)(3-x)-(x-5)=2\(\Rightarrow\)

3-x-x+5=2\(\Rightarrow\)-2x+8=2\(\Rightarrow\)-2x=-6\(\Rightarrow\)x=-6:-2\(\Rightarrow\)x=3