Toán Lớp 7: CHo hàm số y=2x+a-3.Tìm a bt rằng f(-2)=5
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Toán Lớp 7: CHo hàm số y=2x+a-3.Tìm a bt rằng f(-2)=5
Comments ( 2 )
<=> 2(-2) +a-3=5
<=> -4+a-3=5
<=>-7+a=5
<=> a=12