3 years ago

5x + 2y = 18 -5x + 5y = 45

Mathematics

2 answers:

Inga [223]3 years ago

6 0

Answer:

the answer for this problem is (x,y)=(0,9)

aleksandr82 [10.1K]3 years ago

6 0

Answer:

y = 9

x = 0

Step-by-step explanation:

5x + 2y = 18

-5x + 5y = 45 add two equations up

5x + 2y -5x + 5y = 18 + 45 add like terms (note that, 5x will eliminate -5x)

7y = 63 divide both sides by 7

y = 9 to find the value of x we can use this information

5x + 2y = 18 replace y with 9

5x + 2*9 = 18

5x + 18 = 18 subtract 18 from both sides

5x = 0 and x = 0

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