4(9x-18) 3(8x÷12)

-1/3(12x+6) -2x+14

1.6(x+8) 38.4

How do you use the elimination method for this question? explain, because i really want to understand!

Could someone with number 1 and 2

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?