Mathematics
Farnazsafi
59

Need help with these questions. 3. Use the SUBSTITUTION method to solve this system of equations (SHOW ALL WORK): (2pts) Solution:_________ y = 5x - 1 2y = 3x + 12 4. Use the SUBSTITUTION method to solve this system of equations (SHOW ALL WORK): (2pts) Solution: _________ y = -2x + 4 3x - 2y = 6

+5
(1) Answers
musicmaniac14

first answer: y=5x-1 2y=3x+12 so                      2(5x-2)=3x+12 implies that       10x-2=3x+12 so we get that   10x-3x=12+2 in here              7x=14, so x=2 ....(1) and y=5x-1, so we can find y.....        y=5(2)-1=9 , so y=9....(2) to prove the results, we take done any equations if we take second eq. 2y=3x+12, implies that 2(9)=3(2)+12   so                                                                   18=18 it's good result ..................................... also second  question like the above solution

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