Cálculo algébrico (:
a) 7m-[t-(3m+2t)-4]
b) 8ab+5b-3a-[4ab+(9a-6b)-12]
c) x4+3xy-(13xy+7x4)-20xy+8x4
Se algum puder me ajudar, obrigada!!
Soluções para a tarefa
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a)
7m-[t-(3m+2t)-4]=
7m-[t-3m-2t-4]=
7m-[-3m-t-4]=
7m+3m+t+4=
10m+t+4
b)
8ab+5b-3a-[4ab+(9a-6b)-12]=
8ab+5b-3a-[4ab+9a-6b-12]=
8ab+5b-3a-4ab-9a+6b+12=
4ab+11b-12a+12
c)
x4+3xy-(13xy+7x4)-20xy+8x4=
9x4-17xy-13xy+7x4=
16x4-30xy
7m-[t-(3m+2t)-4]=
7m-[t-3m-2t-4]=
7m-[-3m-t-4]=
7m+3m+t+4=
10m+t+4
b)
8ab+5b-3a-[4ab+(9a-6b)-12]=
8ab+5b-3a-[4ab+9a-6b-12]=
8ab+5b-3a-4ab-9a+6b+12=
4ab+11b-12a+12
c)
x4+3xy-(13xy+7x4)-20xy+8x4=
9x4-17xy-13xy+7x4=
16x4-30xy
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