ItsMrATC1 ItsMrATC1

22-01-2016
Mathematics

contestada

The Sum of 4 times one number and 3 times the second number is 65. The sum if the 2 numbers is 18. What are the numbers and equations you used

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dragonflame58 dragonflame58

22-01-2016

4x + 3y = 65
X + y = 18

When you use elimination, multiply the second equation by -3
4x + 3y = 65
-3X -3y = -54
X = 11

X+y = 18
11 + y = 18
Y = 7

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