SOLUTION: Solve the following system of equation: { 𝑿 + 𝟐𝒀 + 𝟑𝒁 = 𝟏𝟎 𝟐𝑿 − 𝒀 + 𝒁 = 𝟗 𝟑𝑿 − 𝒁 = 𝟑 }

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Question 1155480: Solve the following system of equation:
{
𝑿 + 𝟐𝒀 + 𝟑𝒁 = 𝟏𝟎
𝟐𝑿 − 𝒀 + 𝒁 = 𝟗
𝟑𝑿 − 𝒁 = 𝟑
}

Answer by MathLover1(20849)   (Show Source): You can put this solution on YOUR website!
.......eq.1
.......eq.2
.......eq.3
------------------------------

.......eq.3...solve for
.........eq.3a

.......eq.2...solve for
.......eq.2a

from eq.3a and eq.2a we have

......solve for

........eq.b

go to

.......eq.1, substitute and
......solve for






go to
........eq.b, substitute





go to

.........eq.3a, substitute





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