Step-by-step explanation:
taking that blank as x
5/2 -x = 1/3
the x will go to the right hand side of the equation which then would make it positive ( making x the subject) and 1/3 will come to the left hand side of the equation becoming -1/3
so the equation will become 5/2-1/3=x
solving the fraction then gives 13/6 or 2.17 as the value of x
615-138 = 477 you start with 615 take away how many pens are left and then you get your answer
Answer:
D)
Step-by-step explanation:

Coefficient of x is -3/2 and so multiply the whole equation by 2

3x + 2y = -8
3 minutes because half of 6 is 3 so 3 is the anwser.