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Solve. 2a + 3b = 5 6= a -5 a = 4 b = -1 1 a = 6 b=1 a=6 6 = -1 a=4 6 = 1

Solve. 2a + 3b = 5 6= a -5 a = 4 b = -1 1 a = 6 b=1 a=6 6 = -1 a=4 6 = 1-example-1
User RomanHouse
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1 Answer

19 votes
19 votes

Substitute a-5 for b in equation 2a+3b= 5 to obtain the value a.


\begin{gathered} 2a+3\cdot(a-5)=5 \\ 2a+3a-15=5 \\ 5a=20 \\ a=4 \end{gathered}

Substitute 4 for a in the equation b = a -5 to obtain the value of b.


\begin{gathered} b=4-5 \\ =-1 \end{gathered}

So correct answer is a = 4 and b = -1.

User Ketan Yekale
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