(7X-8):(5x+8)=4:3

(7X-8):(5x+8)=4:3


(7X-8)/(5x+8)=4/3
21X-24=20X+32
X=56



（6）0.5x－0.6＝0.7x－1.4+8.6


0.5x－0.6＝0.7x－1.4+8.6
0.7x-0.5x=-0.6+1.4-8.6
0.2x=-7.8
x=-7.8÷0.2
x=-39



Mathematics of the second grade of junior high school: the univariate quadratic equation (1-m ^ 2) x ^ 2 + 2 (1-m) X-1 = 0 of X has two real roots, so we can find the value range of M


Discriminant = 4 (1-m) ^ 2-4 (1-m ^ 2) * - 1 = 8 (1-m) > 0
1-m>0
m

Elden Ring Premiere

RELATED INFORMATIONS