9514 1404 393
Answer:
x = 2
Step-by-step explanation:
This linear equation has 1 answer. It can be found by working backward through the operations that are performed on the variable. Those are ...
- 4 is added
- the sum is multiplied by 3
- the product has 2 subtracted
We can "undo" the last of these by adding 2 to both sides of the equation.
3(x +4) = 18
Undo the multiplication by 3 by dividing both sides by 3.
x +4 = 6
Undo the addition of 4 by adding -4.
x = 2 . . . . . the solution
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Check
Put 2 in the equation where x is and see if it is true.
3(2 +4) -2 = 16
3(6) -2 = 16
18 -2 = 16 . . . . . true
