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What is the solution? y=-x+21 y=-2x+30 a. (8,12) b. (9,11) c. (8,11) d. (9,12)

What is the solution? y=-x+21 y=-2x+30 a. (8,12) b. (9,11) c. (8,11) d. (9,12)
asked 189k views
2 votes
What is the solution?

y=-x+21
y=-2x+30

a. (8,12)
b. (9,11)
c. (8,11)
d. (9,12)

asked
User AdmiralWen
by
7.6k points

1 Answer

5 votes
-x + 21 = -2x + 30
-x + 2x = 30 - 21
x = 9

y = -2x + 30
y = -2(9) + 30
y = -18 + 30
y = 12

solution is (9,12)
answered
User Xavier FRANCOIS
by
8.2k points
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