Question 277512
Equation 1:{{{3A + 5B = 54}}}
Equation 2:{{{A = B + 2}}}

Soulution:
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You can substitute (B + 2) into equation 1 for A
Equation 1:(((3A + 5B = 54}}}
{{{3(B + 2) + 5B = 54}}} Simplify
{{{3B + 6 + 5B = 54}}} Simplify
{{{8B + 6 = 54}}} Subtract 6 from both sides
{{{8B = 48}}} Divide both sides by 8
{{{highlight(B = 6)}}}

Now plug 6 into equation 2 for B
Equation 2:{{{A = B + 2}}}
{{{A = 6 + 2}}}
{{{highlight(A = 8)}}}