PLZZZ HELP WILL GIVE BRAINLIEST NEED THIS FAST PLZZZ

8

Step-by-step explanation:

Let's denote the number of members ordered chicken a, the number of members ordered beef b.

We have:

a + b = 12 (total number of members is 12)

10a + 14b = 136 (the chicken costs 10$, the beef costs 14$)

a + b = 12 => a = 12 - b

Substitute a into second equation, we have:

10(12 - b) + 14b = 136

=> 120 - 10b + 14b = 136

=> 4b = 16

=> b = 4

=> a = 12 - b = 12 - 4 = 8

=> Number of members ordered chicken: a = 8

x = 2

Step-by-step explanation:

3 - 6x = -9

I see a lot of negative numbers, which can make an equation more difficult to solve. Let's make these numbers positive.

Add 6x to both sides.

3 = -9 + 6x

Add 9 to both sides.

12 = 6x

Now we want to isolate x by dividing both sides by 6.

2 = x

This is your answer.

Let's check it by plugging x = 2 back into the original equation.

3 - 6x = -9

3 - 6(2) = -9

3 - 12 = -9

-9 = -9

Your answer is correct.

Hope this helps!