If we are trying to find x then it is 21
all you have to do is set them equal to each other
so (4x+3)=87
let me know if I need to explain more
Answer:
He will be 8x+10 years old
Step-by-step explanation:
8x plus 10 = 8x+10
Answer:
-4x-13
Step-by-step explanation:
To figure out the sum, you have to add like terms.
This is how it would look like:
