Toán Lớp 6: 2. Thu gọn biểu thức
S=-(x+y-Z)+(y+x+Z)+2021
Q=(m-n+p)-(p+n-m)+p+q
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Toán Lớp 6: 2. Thu gọn biểu thức
S=-(x+y-Z)+(y+x+Z)+2021
Q=(m-n+p)-(p+n-m)+p+q
Comments ( 2 )
S = – ( x + y – Z ) + ( y + x + Z ) + 2021
S = – x – y + Z + y + x + Z + 2021
S = ( – x + x ) – ( y – y ) + ( Z + Z ) + 2021
S = 0 + 0 + 2Z + 2021
S = 2Z + 2021
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Q = ( m – n + p ) – ( p + n – m) + p + q
Q = m – n + p – p – n + m + p + q
Q = ( m + m ) – ( n + n ) + ( p – p + p ) + q
Q = 2m – 2n + p + q
S=-(x+y-z)+(y+x+z)+2021
S=-x-y+z+y+x+z+2021
S=2z+2021
Q=(m-n+p)-(p+n-m)+p+q
Q=m-n+p-p-n+m+p+q
Q=2m-2n+p+q