Question

in triangle xyz two angles are equal x = y=2x+7 z=45​

Answer 1

$2x + 7 + 2x + 7 + 45 = 180 \: {sum \: of \: all \: angles \: in \: a \: triangle \: is \: 180 \\ \\ = 4x + 59 = 180 \\ \\ 4x = 180 - 59 \\ \\ = 4x = 121 \\ \\ x = 121 \div 4$