Final answer:
To solve the equation (5x3)+(nx4)=5(3+4), simplify the left and right sides separately. Then isolate 'n' by performing the necessary operations. The value of 'n' is 5.
Step-by-step explanation:
The given equation is (5x3)+(nx4)=5(3+4). To solve this equation, we can simplify both sides separately and then compare them. On the left side, we can simplify (5x3) as 15 and (nx4) as 4n. So the left side becomes 15+4n. On the right side, we can simplify 5(3+4) as 5x7 which is 35. Therefore, the equation simplifies to 15+4n=35. To solve for n, we need to isolate it by subtracting 15 from both sides. This gives us 4n=20. Finally, divide both sides of the equation by 4 to find the value of n, which is n=5.