Question

-3 (+5-4m) +6 (-2m-9)=

7(-4+9)-(-6+3)=

-(8a+3b) +2(-4a-7b)=

5x(-3-12)-2 (-8+9)=

(6m+n) +4 (+2m-5n)=

Answer 1

Respuesta:

-3 (+5-4m) +6 (-2m-9)=

-15 +12m - 12m - 54

-15- 54

- 69

7(-4+9)-(-6+3)=

7 x 5 - ( -3 )

35- ( -3 )

35 + 3

38

-(8a+3b) +2(-4a-7b)=

-8a - 3b + 2 ( 4a - 7b )

-8a - 3b - 8a - 14b

-16a - 3b - 14b

16a- 17b

-16a - 17b

5x(-3-12)-2 (-8+9)=

5x ( -15 ) -2 ( -8 + 9 )

5x ( -15 ) -2 x1

5x ( -15 ) -2

-75 -2

-77

(6m+n) +4 (+2m-5n)=

6m + n +4 (2m -5n )

6m + n + 8m -20n

14m + n - 20

14m - 19n

14m - 19 n