Log Questions(Quick!)

1.
5^(3X－4)×3^(2X)=7^(X+1)×11^(2－X)
log[5^(3X－4)×3^(2X)]=log[7^(X+1)×11^(2－X)]
log[5^(3X－4)] + log[3^(2X)]=log[7^(X+1)]+ log[11^(2－X)]
(3X－4) * log5 + (2X) * log3=(X+1) *log7+ (2－X) * log11
(3log5) * X－4 * log5 + (2log3) * X=log7* X + log7+ 2* log11 - log11 * X
(3log5 + 2log3 - log7+log11) * X= log7+ 2* log11 + 4 * log5
X= (log7+ 2* log11 + 4 * log5 ) / (3log5 + 2log3 - log7+log11) = 1.24
2.
4^X－4^X-1＝192
4^X－(1/4) * 4^X＝192
(1 - 1/4) * 4^X＝192
(3/4) * 4^X＝192
4^X＝192 / (3/4) = 192 * 4 /3 = 256 = 4^4
X=4