Solve each of the following systems of equations for x and y.(a)x + y = 24x-y

游客2025-02-23 11

问题 Solve each of the following systems of equations for x and y.
(a)x + y = 24
x-y = 18
(b)3x-y = -5
x + 2y = 3
(c)15x-18-2y = -3x + 7
10x + 7y + 20 = 4x + 2

选项

答案 (a)x=21
y=3
(b)x=-1
y=2
(c)x=1/2
y=-3

解析

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Solve each of the following systems of equations for x and y.(a)x + y = 24x-y

Allthefollowingcasesareon-the-jobsmokingexceptthat______.[br]Inthese

Inmakingmarketinvestigation,oneshould______.[br]Allthefollowingarech

Inmakingmarketinvestigation,oneshould______.[br]Whichofthefollowings

Themaincauseofpollutionis______.[br]Whichofthefollowingcannothelps

Whichofthefollowingcanbeinferredfromthepassage?[br]Thebestconclusio

Thepassageismainlyabout______.[br]WhichofthefollowingisNOTmentioned

WhiletakingataxiinFinland,______.[br]WhichofthefollowingisNOTtrue

Thepassageismainlyabout______.[br]WhichofthefollowingdoesRebeccaDres

WhichofthefollowingisNOTtrueaccordingtothepassage?[br]Theword"affe

WhichofthefollowingisNOTtrueaccordingtothepassage?[br]Whyisitadvi

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[originaltext]M:I’veheardthatyouplaytheviolinverywell.W:Thankyou.I

()intheearth’scrust，therockmaybe

在整个教育工作中居于核心地位的是()A.教学计划 B.教学大纲 C.教育目

使用药物流产，应在妊娠A.7周(50天)内 B.8周内 C.9周内 D.1

男性，62岁，呼吸急促，喉间哮鸣有声，胸膈满闷如塞，面色晦滞带青，口不渴，形寒怕

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