Zapisz wyrażenia, nie używając nawiasów.Zredukuj wyrazy podobne.
a) 2a - 5b +(7-3a-2b)= 2a-5b+ 7 -3a-2b= -a -7b+7
b) 4-14x-(8 - 5x+3)= 4-14x-8+5x-3= -9x -7
c) -( 6st+2s) + 4st +2s= -6st -2s+4st+2s= - 2st
d) (3m+8n-9)+(15-5m-n)= 3m+8n-9+15-5m-n= -2n+7n +6
e) (-4a3 +7a2-1)-(2a2+3a-1)= -4a3+7a2-1-2a2-3a+1= -4a3 +5a2
f) (-xy+5y-x)- (-xy+2x-y)= -xy+5y-x+xy-2x+y= -3x+6y
a) 7-a-7b
b)-9x-7
c)-2st
d)5n+6
e)-4a³+5a²
f)6y-3x
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a) 2a - 5b +(7-3a-2b)= 2a-5b+ 7 -3a-2b= -a -7b+7
b) 4-14x-(8 - 5x+3)= 4-14x-8+5x-3= -9x -7
c) -( 6st+2s) + 4st +2s= -6st -2s+4st+2s= - 2st
d) (3m+8n-9)+(15-5m-n)= 3m+8n-9+15-5m-n= -2n+7n +6
e) (-4a3 +7a2-1)-(2a2+3a-1)= -4a3+7a2-1-2a2-3a+1= -4a3 +5a2
f) (-xy+5y-x)- (-xy+2x-y)= -xy+5y-x+xy-2x+y= -3x+6y
a) 7-a-7b
b)-9x-7
c)-2st
d)5n+6
e)-4a³+5a²
f)6y-3x