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{:[-3a+5b=11],[6a+2b=26]:}
Consider the given system of equations. If 
(a,b) is the solution to the system, then what is the value of 
(a)/(b) ?

3a+5bamp;=116a+2bamp;=26 \begin{aligned} -3 a+5 b & =11 \\ 6 a+2 b & =26 \end{aligned} \newlineConsider the given system of equations. If (a,b) (a, b) is the solution to the system, then what is the value of ab \frac{a}{b} ?

Full solution

Q. 3a+5b=116a+2b=26 \begin{aligned} -3 a+5 b & =11 \\ 6 a+2 b & =26 \end{aligned} \newlineConsider the given system of equations. If (a,b) (a, b) is the solution to the system, then what is the value of ab \frac{a}{b} ?
  1. Multiply Equations: Let's solve the system of equations using the method of substitution or elimination. We will use the elimination method to eliminate one of the variables and solve for the other.\newlineFirst, we need to make the coefficients of one of the variables the same in both equations. We can multiply the first equation by 22 and the second equation by 33 to make the coefficients of aa the same.
  2. New System of Equations: After multiplying the first equation by 22, we get:\newline2(3a+5b)=2(11)2(-3a + 5b) = 2(11)\newline6a+10b=22-6a + 10b = 22\newlineAnd after multiplying the second equation by 33, we get:\newline3(6a+2b)=3(26)3(6a + 2b) = 3(26)\newline18a+6b=7818a + 6b = 78\newlineNow we have the new system of equations:\newline\begin{cases}-6a+10b=22\18a+6b=78\end{cases}
  3. Add Equations: Next, we add the two equations together to eliminate aa:(6a+10b)+(18a+6b)=22+78(-6a + 10b) + (18a + 6b) = 22 + 78This simplifies to:(6a+18a+10b+6b=100)(-6a + 18a + 10b + 6b = 100)12a+16b=10012a + 16b = 100
  4. Solve for 'a': Now we can solve for 'a' by isolating it on one side:\newline12a=10016b12a = 100 - 16b\newlinea=10016b12a = \frac{100 - 16b}{12}
  5. Substitute 'a': We can substitute the expression for 'a' back into one of the original equations to solve for 'b'. Let's use the first original equation:\newline3a+5b=11-3a + 5b = 11\newlineSubstituting 'a', we get:\newline3(10016b12)+5b=11-3\left(\frac{100 - 16b}{12}\right) + 5b = 11
  6. Simplify Equation: Now we simplify the equation:\newline3(10012)+3(16b12)+5b=11-3(\frac{100}{12}) + 3(\frac{16b}{12}) + 5b = 11\newline25+(4b)+5b=11-25 + (4b) + 5b = 11\newline9b25=119b - 25 = 11
  7. Correct Mistake: We made a mistake in the previous step while distributing the 3-3 across the terms in the parentheses. Let's correct this and simplify again.\newline3((10016b)/12)+5b=11-3((100 - 16b) / 12) + 5b = 11\newline((30048b)/12)+5b=11-((300 - 48b) / 12) + 5b = 11\newline25+4b+5b=11-25 + 4b + 5b = 11