Step-by-step explanation:
17) 3x+5-12+4x+2x
3x+4x+2x +5-12
8x-7
if x =6
8*6-7 =48-7
= 41
18.) 9(3x-4y+8)
27x-36y+72
Answer:
What is that?
Step-by-step explanation:
(36-4)=32
32\16=2
2-7^2=-47
We need to solve the equation to find x

We will simplify the left side by multiply each bracket by the number before it
-3(x - 6) = -3(x) + -3(-6) = -3x + 18
4(x + 1) = 4(x) + 4(1) = 4x + 4
Now put them on the left side

Add the like terms on the left side

Now we will collect x on the right side and the numbers on the left side
Subtract x from both sides

Add 14 to both sides

Divide both sides by 6 to find x

The value of x is 6