Question

can anyone solve this? 4^(x+7)=6^(x-1)?

Answer 1

what kind of math is this? Like algebra?

Answer 2

4^(x+7)=6^(x-1)

ln(4^(x+7))=ln(6^(x-1))

xln(4)+7ln(4)=ln(6^(x-1))

xln(4)+7ln(4)-xln(6)=-ln(6)

x(ln(4)-ln(6))=-7ln(4)-ln(6)

x=(-7ln(4)-ln(6))/(ln(4)-ln(6))

x=-28.3522

Answer 3

oh yes it is algerbra !... and yei i think i finally got it! got the same!! thank u so much .sam!