plz solve it..................
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hope it helps you
thankyou
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60
Step-by-step explanation:
LA+LB+LC=180 (angle sum property)
(X+42)+(4X-12)+(3X+6)=180
X+42+4X-12+3X+6=180
X+4X+3X+42-12+6=180
8X+48-12=180
8X+36=180
8X=180-36
8X=144
X=144/8
X=18
LA=X+42=18+42=60
LB=4X-12=4×18-12=72-12=60
LC=3X+6=3×18+6=54+6=60
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