Question

Please solve this please please ​

Answer 1

Answer:

$by \: angle \: sum \: property \: of \: triangle \\ (x + 21) + x + (2x - 45) = 180 \\ x + x + 2x + 21 - 45 = 180 \\ 4x - 44 = 180 \\ 4x = 180 + 44 \\ 4x = 224 \\ x = \frac{224}{4} \\ x = 56$

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