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Hence, x = 0°, 180° and 360° <em><u>Ans</u></em>
Use elimination
-x - y = -9
x - y = 3
Add both equations
-2y = -6, y = 3
-x -(3) = -9
-x = -6, x = 6
Final answer: x = 6, y = 3
Again
1000kg = 1ton
3000kg = 3 tons
Answer:
(use algebra) 1st no. is a,2nd no. is 8 times the 1st which is 8a, 3rd no. 100 more than 1st which is a+100
total is 420, thus a+8a+a+100=420
10a+100=420, take 100 to the other side
10a=320 hence 32
1st no. is 32, 2nd is 256, 3rd is 356