Write an equation that will solve this problem: together a house and a lot cost $400,000. the house cost seven times as much as the lot. how much will the lot cost? how much will the house cost?

Hi

House = H
Lot = L

H+L = 400,000
H = 7L

7L+L = 400,000
8L = 400,000
L = (400,000)/8
L = 50,000 

H = 7L
H = 7(50,000)
H = 350,000 

Lot cost: $ 50,000
House cost: $ 350,000

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)