Which equation is the result of subtracting the second equation from the first?

4x-6y=13
-5x+2y=5

a. -9x-4y=8
b. -x+4y=8
c. x-4y=8
d. 9x-8y=8

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

What is the least common multiple for 6 and 8? what is the least common multiple for 4 and 12 ? what is the least common multiple for 11 and 12? what is the least common multiple for 3 and 6?

Walking at a constant rate of 8 kilometers per hour, juan can cross a bridge in 6 minutes. what is the length of the bridge in meters?