<span>1)log5(6+7x)=log5(4+x)+1</span>
log5(6+7x)/(4+x)=1
(6+7x)/(4+x)=5
6+7x=20+5x
2x=14
x=7
<span>2) log2(4-x)=log2(1-3x)+1(</span>
(4-x)/(1-3x)=2
4-x=2-6x
5x=-2
x=-2/5
3) log5(8+5x)=log5(4-3x)+1
(8+5x)/(4-3x)=5
8+5x=20-15x
20x=12
x=3/5
<span>4)log2(4+5x)=log2(1-4x)+1</span>
<span>(4+5x)/(1-4x)=2</span>
<span></span>
<span>4+5x=2-8x</span>
<span>13x=-2</span>
x=-2/13
<span>5)log3(6+5x)=log3(3+5x)+1</span>
<span>(6+5x)/(3+5x)=1</span>
<span>6+5x=9+15x</span>
<span>x=-3/10</span>
<span>6) l<span>og4(4+3x)=log4(1-5x)+1</span></span>
<span><span>(4+3x)/(1-5x)=4</span></span>
<span><span></span></span>
<span><span>4+3x=4-20x</span></span>
<span><span>x=0</span></span>