Question 678953
{{{sqrt(y+4) + 6 + 7}}}
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To solve means there is an equal sign, should it be {{{sqrt(y+4)= 6+7}}} ?
{{{sqrt(y+4) = 13}}}
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{{{sqrt(y+4)^2 = 13^2}}}
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y + 4 = 169
y = 169 - 4
{{{highlight_green(y = 165)}}}
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