Select ALL the equations where a = 8 is a solution. Group of answer choices

1. a + 11 = 15

2. 1 = 8 ÷ a

3. 15 + a = 23

4 . 42 = 7a

a - 5 = 3

I know for sure that 3 is and ik the very last one is

Step-by-step explanation:

a + 11=15 would make a equal to 4 bc you would subtract 11 from both sides

I'm not sure about the second one but I think a would equal 1/8

3 obviously equals 8 cuz u subtract 15 from both sides

the 4th onei think is 6 I can't remember what 42 divided by 7 is rn so buut I think it's 6

and the last one is also 8

the equivalent expression are always the hardest ones but you look at the gcf also

step-by-step explanation:

(-5,-28)

i graphed to on desmos.