Question 1045635
Let {{{ A }}} = one of the unknown angles in degrees
The other unknown angle is:
{{{ 3A - 3 }}} degrees
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The sum of the angles is {{{ 180 }}} degrees, so
{{{ 47 + A + 3A - 3 = 180 }}}
{{{ 4A = 180 - 47 + 3 }}}
{{{ 4A = 136 }}}
{{{ A = 34 }}}
and
{{{ 3A - 3 = 3*34 - 3 }}}
{{{ 3A - 3 = 99 }}}
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The 2 remaining angles are 34 degrees and 99 degrees
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check answer:
{{{ 47 + A + 3A - 3 = 180 }}}
{{{ 47 + 34 + 3*34 - 3 = 180 }}}
{{{ 81 + 102 - 3 = 180 }}}
{{{ 81 + 99 = 180 }}}
{{{ 180 = 180 }}}
OK