Question

Which of these shows the result of using the first equation to substitute for y in the second equation then combing like terms

y=3x
2x+3y=55

Answer 1

`2x + 3y = 55`

`2x + 3(3x) = 55`

`2x + 9x = 55`

`11x = 55`

`(11x)/(11) = (55)/(11)`

x=5