Question

Tìm x:

a) 461+(x-45)=387

b)11-(-53+x)=97

c) -(x+84)+213=-16

Help me!! Thank you !!!!

Answer 1

a) 461 + (x – 45) = 387

x – 45 = 387 – 461

x – 45 = -74

x = -74 + 45

x = -29

Vậy x = -29

b) 11 – (-53 + x) = 97

-53 + x = 11 – 97

-53 + x = -86

x = -86 – (-53)

x = -33

Vậy x = -33

c) -(x + 84) + 213 = -16

-(x + 84) = -16 – 213

-(x + 84) = -229

-x – 84 = -229

-x = -229 + 84

-x = -145

\(\Rightarrow\)x = 145

Vậy x = 145

Tick cho mình nhé!!!