Question

Porfavor me ayudan en estos calculos

a.7m + 5 - 3m + 4 - m =
c.3(a + 1) + 4(a + 2) =
b. 5(n + 2) - 3 n-7=
d.b + 15 + 6(2b - 1) =​​

Answer 1

Respuesta:

a) 7m + 5 - 3m + 4 - m

( 7m - 3m - m ) + ( 5 + 4 )

( 4m - m ) + ( 5 + 4 )

3m + 9

b) 5 ( n + 2 ) - 3n - 7

5n + 10 - 3n - 7

( 5n - 3n ) + ( 10 - 7 )

2n + 3

c) 3 ( a + 1 ) + 4 ( a + 2 )

3a + 3 + 4a + 8

( 3a + 4a ) + ( 3 + 8 )

7a + 11

d) b + 15 + 6 ( 2b - 1 )

b + 15 + 12b - 6

( b + 12b ) + ( 15 - 6 )

13b + 9