Question 289551
Set-UP:
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Equation 1: {{{A + B = 35}}}
Equation 2: {{{A = 2.5*(B)}}}
Solution:
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Plug 2.5*(B) into equation 1 for A
Equation 1: {{{A + B = 35}}}
{{{2.5*(B) + B = 35}}} Simplify
{{{3.5*(B) = 35}}} Divide both sides by 3.5
{{{highlight(B = 10)}}}
Now plug 10 into equation 2 for B
Equation 2: {{{A = 2.5*(B)}}}
{{{A = 2.5*(10)}}}
{{{highlight(A = 25)}}}