Pani nam kazała nam to rozwiązać : a ) -14z + (-106) - (-11b) + 3,5 + ( 7,5z ) = b) 28p + ( -28r) - ( 4jedna druga p ) - 14r = c) -27,07d - 12d - ( -7e) + 11e - 3d = d ) 4,8w + 4p + ( -3 w ) -(-7w) + 11p - (-3p) = e )-26c - 13a - 4,5a+ 20a - ( -26,8 c )= Pliss mam na jutro :P
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a ) -14z + (-106) - (-11b) + 3,5 + ( 7,5z ) = -14z -106+11b+3,5+7,5z = 11b-6,5z - 102,5
b) 28p + ( -28r) - ( 4jedna druga p ) - 14r =28p -28r-4,5p -14r = 23,5p -42r
c) -27,07d - 12d - ( -7e) + 11e - 3d =-27,07d -12d+7e+11e -3d = -42,07d +18e
d ) 4,8w + 4p + ( -3 w ) -(-7w) + 11p - (-3p) =4,8w +4p -3w +7w +11p = 15p +8,8w
e )-26c - 13a - 4,5a+ 20a - ( -26,8 c )=-26c -13a -4,5a+20a +26,8c = 2,5a +0,8c
mam nadzieje, że pomogłam :)