Adisplay has 6 packs of marbles with a total mass of 629g. the packaging of each pack has a mass of 2/3g and each marble has a mass of 4 1/2g. which equation can we use to determine m, the number of marbles per pack? a.6x4 1/2m+2/3=629 b.6m(4 1/2+ 2/3)=629 c.6m+4 1/2 +2/3)=629 d.6(4 1/2m +2/3)=629

D. 6·(4 1/2·m + 2/3) = 629

D

Step-by-step explanation:

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37/3

step-by-step explanation:

step 1: simplify both sides of the equation.

7x+8(x+

1

4

)=3(6x−9)−8

7x+(8)(x)+(8)(

1

4

)=(3)(6x)+(3)(−9)+−8(distribute)

7x+8x+2=18x+−27+−8

(7x+8x)+(2)=(18x)+(−27+−8)(combine like terms)

15x+2=18x+−35

15x+2=18x−35

tep 2: subtract 18x from both sides.

15x+2−18x=18x−35−18x

−3x+2=−35

step 3: subtract 2 from both sides.

−3x+2−2=−35−2

−3x=−37

step 4: divide both sides by -3.

−3x

−3

=

−37

−3

x=

37

3