Solve the sum of two numbers is 23. one number is one less than twice the other. find the two numbers

x + y = 23

x = 2y-1

y + 2y-1 =23

3y-1 =23

3y =24

y = 24/3 =8

 y = 8

 x = 2*8-1 = 15

15+8 = 23

 the 2 numbers are 8 & 15

took the test it's 94

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: