( 8 x + 30 ) o + ( 4 x + 18 ) o = 18 0 o 8 x + 3 0 o + 4 x + 1 8 o = 18 0 o 12 x + 4 8 o = 18 0 o ∣ − 4 8 o 12 x + 4 8 o − 4 8 o = 18 0 o − 4 8 o 12 x = 13 2 o / : 12 x = 12 13 2 o x = 1 1 o A n s w er : C .11
The solution for x in the equation ( 8 x + 30 ) ∘ + ( 4 x + 18 ) ∘ = 18 0 ∘ is x = 11 .
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