Please help me with this

4

Step-by-step explanation:

Need to know #, and solve :

  # is the same as

 #you need the same denominator to be able to add or subtract fractions

 #  is the same as  

 #  is the same as a*d = b*c

6 ( 2*s - 4) = 3 ( s+4)

 # distribute multiplication over addition and subtraction

12s-24 = 3s+12

 #isolate like terms

12s-3s = 12+24

 #combine like terms

9s = 36

 #divide both sides by 9

s= 4

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70