348-5.(x+14)=198
5(x+14) = 348- 198
5 (x+14)= 150
x +14 = 150:5
x + 14= 30
x = 30-14
x = 16
348 - 5 * (x + 14) = 198
=> 5 * (x + 14) = 348 - 198
5 *(x + 14) = 150
=> x + 14 = 150 :5
x + 14 = 30
=> x = 30 - 14
x = 16
chúc you học giỏi!! ^^
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5*(x+14)=348-198
5*(x+14)=150
5x+60=150
5x=90
x=18