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1.9-2 [3x-{y-3(2x-3y-8)}] |
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Answer» try it here I give you a model questionStep-by-step EXPLANATION:Question 1:Complete the following activity to solve the simultaneous equations.5x + 3y = 9 -----(I)2x + 3y = 12 ----- (II)ANSWER:Disclaimer: There is error in the Q. In (II) there should have been 2x - 3y = 125x + 3y = 9 -----(I)2x - 3y = 12 ----- (II)Add (I) and (II)7x = 21x = 3Putting the value of X = 3 in (I) we get5(3)+3y=9⇒15+3y=9⇒3y=9-15=-6⇒y=-2Thus, (x, y) = (3, -6). |
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