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If 5x+3y=12 and 4x-5y=17, what is the value of y?
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If 5x+3y=12 and 4x-5y=17, what is the value of y?
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Mathematics
3 years
2021-09-03T19:00:23+00:00
2021-09-03T19:00:23+00:00 1 Answers
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Step-by-step explanation:
5x+3y = 12 …1
4x-5y = 17 …2
…1 × 5 both sides of the equation
25x + 15y = 60 …3
…2 × 3 both sides of the equation
12x – 15y = 51 …4
…3 + …4
25x + 15y + 12x -15y = 60+51
37x = 111
x = 111/37 = 3
replace x = 3 in …1
y = …….