\( 2.(5x + 12) = 50 - (-14) \)
\(=> 2.(5x + 12) = 64\)
\(=> 5x + 12 = 64 : 2\)
\(=> 5x + 12 = 32\)
\(=> 5x = 32 - 12\)
\(=> 5x = 20\)
\(=> x = 20 : 5\)
\(=> x = 4\)
\(Vậy x = 4\)
2.(5x + 12) = 50-(-14)
= 2 . ( 5x + 12) = 64
= ( 5x + 12) = 64 : 2
= ( 5x + 12) = 32
= 5x = 32 - 12
= 5x = 20
= x = 20 : 5
= x = 4
Vậy x = 4
2 (5x + 12) = 50 -(-14)
2(5x + 12) = 64
5x + 12 = 64:2
5x +12 = 32
5x = 20
x =4
2.(5x+12)=50-(-14)
2.(5x+12)=64
5x+12 =64:2
5x+12 =32
5x =32-12
5x =30
x =30:5
x =6
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Lộn
2.(5x+12)=50-(-14)
2.(5x+12)=64
5x+12 =64:2
5x+12 =32
5x =32-12
5x =20
x =20:5
x =4
2.(5x+12)=50-(-14) 2.(5x+12)=50+14=64 (5x+12) =64:2 5x+12 =32 5x =32-12 5x =20 x =20:5 x =5 Vậy x=5
