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Alex787 [66]
2 years ago
10

How to solve this substitution​

Mathematics
1 answer:
Lena [83]2 years ago
6 0
-5x+4y=11
substitute for x which is 5
(-5)(5)+4y=11

simplify :
4y-25=11

add 25 on both sides
4y-25=11
+25 +25
the 25 cancels out

so it would be 4y=36
and you divide both sides by 4

4/4 =36/4

which gives you (5,9)
x= 5 , y =9
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3 years ago
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kramer

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