Question

sam chooses a number he multiplies it by 7 and adds 3 his inal answer his 45 write down the equation and solve it

Answer 1

The equation is 7x + 3 = 45, and x = 6.

Since Sam chooses an unknown number (n) and multiplies it by 7. After that, he adds 3, therefore the equation is 7x + 3 = 45.

Solving this equation, you'd subtract 3 from both sides, leaving "7x = 42". Next, you divide both sides by 7, which give you an answer of x = 6.

I hope this helps!

Answer 2

First, we need to find the equation. If he multiplies it by 7, that sounds like 7x. Then add three to get 7x+3. Finally, set it equal to 45 for the final answer.

45=7x+3

To solve for x, just try to get it by itself.
45=7x+3
42=7x
x=6