Question

5x + 10y = 18
x = y - 6

Answer 1

@dds4773
multiply the second equation by 5

let me know what you get

Answer 2

still there?

Answer 3

yeah just bad at math so i don't know what i'm doing

Answer 4

5 times x is 5x
5 times y is 5y
6 times 5 is 30

so x = y - 6 multiplied by 5 becomes 5x = 5y - 30

make sense?

Answer 5

oh okay yeah it does

Answer 6

then we can subtract 5y from both sides to get 5x - 5y = -30

now let's re-write our two equations

Answer 7

5x + 10y = 18
5x-5y = -30

now let's subtract our two equations

5x - 5x = ?

Answer 8

wouldn't that just be x

Answer 9

hint: 5 - 5 = 0
5x - 5x = __x

fill in the blank

Answer 10

oof sorry about that

Answer 11

anyway since 5 - 5 is 0 then it naturally follows that 5x - 5x = 0x so 0