Owing each step. Wri

7 (m + 5) = 21

m=-2

Step-by-step explanation:

7 (m+5) = 21

m+5=21/7

m+5=3

m=3-5

m=-2

7 (m + 5) = 21

multiply the bracket by 7

(7) (m) = 7m

(7) (5) = 35

7m+35=21

move + 35 to the other side

sign changes from + 35 to - 35

7m+35-35=21-35

7m=21-35

7m=-14

divide both sides by 7 to get m by itself

7m/7=-14/7

cross out 7 and 7, divide by 7 and then becomes 1*1*m=m

m=-14/7

answer:

m=-2