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Sagot :
Answer:
x = 11
Step-by-step explanation:
(3x + 28) + (5x + 52) + ( 2x - 10) = 180
(3x + 5x + 2x) + (28 + 52 - 10) = 180
10x + 70 = 180
10x = 180 - 70
10x = 110
x = 11
Answer:
x= 11
Step-by-step explanation:
(3x + 5x) + (5x+52) + (2x-10)= 180 (sum of anglea in a triangle)
10x+80-10= 180
10x+70=180
10x=180-70
10x=110
x=110÷10
x=11
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