Question

Solve the following equations and check your solution using substitution.

6 - 5x = 16

4 - 9x = -7

(BTW pls show your working out)

Answer 1

Q1) x =2 Q2) x = 11/9

Explanation:

Q1) 6 - 5x = 16 check : -5(2) = -10

-6 -6 6 -- 10 = 6+ 10 = 16

-5x = 10 Q2) 4 - 9x = -7

-x = -2 -4 -4

x = 2 -9x = - 11

-------------- -x = -11 /9 -----> x = 11/9

Answer 2

Answer: 1.
`x=-2`; 2.
`x=(11)/(9)`

Step-by-step explanation :

1.

`6-5x=16\\6-5x-6=16-6\\-5x=10\\(-5x)/(-5)=(10)/(-5)\\x=-2`

2.

`4-9x=-7\\4-9x-4=-7-4\\-9x=-11\\(-9x)/(-9)=(-11)/(-9)\\x=(11)/(9)`