2x-5=49
move -5 to the other side
sign changes from -5 to +5
2x-5+5= 49+5
2x=49+5
2x= 54
divide both sides by 2 to get x by itself
2x/2= 54/2
cross out 2 and 2, divide by 2 and then becomes 1*1*x=x
54/2= x
Answer:
x= 27
Π = 3.14
π = 3.141592653589793
Answer:
11) Here given Function,

And, 
For f(x) = g(x)






When we solve this equation,
We found,
x = 12.5227 ≈ 12.53
Thus, the required solution is, x = 12.53
12) Here the height of rocket A in x second,

And, The height gain by the rocket B in x seconds,

If at x seconds both A and B gain the same height,
That is, f(x) = g(x)
⇒ 
⇒
⇒ 
⇒ 
⇒ x = 1.125 ≈ 1.13
Thus, the required solution is x = 1.13 seconds (approx)