Toán Lớp 6: 3-(17-x)=289-(36+289)
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Toán Lớp 6: 3-(17-x)=289-(36+289)
Giảng giúp mình với
Comments ( 2 )
3 – (17 – x) = 289 – (36 + 289 )
=> 3 – 17 + x = 289 – 36 – 289
=> -14 + x = (289 – 289 ) – 36
=> -14 + x = 0 – 36
=> -14 + x = -36
=> x = (-36) – (-14)
=> x = -22
Vậy x = -22
#dtkc
3-(17-x)=289-(36+289)
3-(17-x)=289-325
3-(17-x)=-36
17-x=3-(-36)
17-x=39
x=17-39
x=-22
vậy x=-22