Question

Find the value of y 5x+7x+24=180 and y= 6y+7

Answer 1

y = - 1.4

Explanation:

In finding y the equation in x is redundant as y can be found from

y = 6y + 7 ( subtract y from both sides )

0 = 5y + 7 ( subtract 7 from both sides )

- 7 = 5y ( divide both sides by 5 )

y = -
`(7)/(5)` = - 1.4