Question

solve the following equation (1)8n-6 =40 (2)14s=280 (3)n+35=80​

Answer 1

Answer:

(1) n=5.75 (2) s=20 (3) n=45

Step-by-step explanation:

(1) 8n - 6 = 40

=> 8n = 40 + 6 (6 will go to the other side and the minus sign will change to plus because a sign changes by going to the other side)

=> 8n = 46 (6 will be added to 40 and it will become 46)

=> n = 46 ÷ 8 (simple division but will go to decimal)

=> n = 5.75

(2) 14s = 280

=> s = 280 ÷ 14 (14 will go to the other side and change its sign from multiplication to division sign)

=> s = 20

(3) n + 35 = 80

=> n = 80 - 35 (as we saw in the first question that 6 changed it sign from plus to minus so here it will do the vice-versa{just the opposite, will change the plus sign to minus})

=> n = 45