Question

Simplifique as expressões algébricas resolva-as, sabendo que x=2 e y=3: a)7x + 2y - 4x + 4y= b)10x - 4xy + x + 8xy= c)10y + 8x + 6y – 18x= d)6x + 4y - 2x + 3y=​

Answer 1

Resposta:

a)24

b)46

c)28

d)29

Explicação passo a passo:

a)7.2+2.3-4.2+4.3=14+6-8+12

14+6-8+12=24

b)10.2- 4.2.3 + (.2) + 8.2.3=20-24+2+48

20-24+2+48=46

c)10.3 + 8.2 + 6.3 – 18.2=30+16+18-36

30+16+18-36=28

d)6.2 + 4.3- 2.2 + 3.3=​12+12-4+9

12+12-4+9=29