Answer:
Soln:4x°+8x°=180°
12x°=180°
or,x°=180°/12
or,x°=15
4x°=4×15°=60°
8x°=8×15°=120
The two angles sum to equal 180 degrees.
4x + 8x = 180
12x = 180
X = 180/12
X = 15
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