Question 762196
Equation 1: {{{X + Y = 140}}}
Equation 2: {{{X = 34 + Y}}}
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Plug (34 + Y) into equation 1 for X
Equation 1: {{{X + Y = 140}}}
{{{(34 + Y) + Y = 140}}}
Combine like terms
{{{34 + 2Y = 140}}}
Subtract 34 from both sides.
{{{2Y = 106}}}
Divide both sides by 2.
{{{highlight(Y = 53)}}}
Now plug 53 into equation 2 for Y.
Equation 2: {{{X = 34 + Y}}}
{{{X = 34 + (53)}}}
{{{highlight_green(X = 87)}}}