There are 19 green marbles in a box. The number of green marbles in the box is 6 more than half the number of red marbles in the box. Write an algebraic equation to represent r, the number of red marbles in the box.
2 answers:
Answer Answer R= 2(G-6)
:G=19
G=.5R+6
19=.5R+6
-6=.5R-6
13.=.5R
Divide by 5
R= 26
Step-by-step explanation:
Answer:
r = 2(19-6)
Step-by-step explanation:
19 is the number of green. 19 also is equal to (r/2 + 6)
so 19 = r/2 + 6 rearrange for R = 2( 19-6)
subtract 6 from both sides, then multiply by 2 to cancel the denominator.
19 -6 = r/2 13 = r/2
2(13) = r
r =26
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