180°-132°13′27″+25°12′38″还有解方程X-1/0.3=1-X-1/0.51-2X-5/6=3-X/4

Question

180°-132°13′27″+25°12′38″
还有解方程X-1/0.3=1-X-1/0.5 1-2X-5/6=3-X/4

Answer 1

180°-132°13′27″+25°12′38″
=179°59′60″-132°13′27″+25°12′38″
=47°46′33″+25°12′38″
=72°58′71″
=72°59′11″
(X-1)/0.3=1-(X-1)/0.5
(X-1)/0.3+(X-1)/0.5=1
乘以3得
10(X-1)+6(X-1)=3
16(X-1)=3
X-1=3/16
X=1+3/16
X=19/16
1-(2X-5)/6=(3-X)/4
乘以12得
12-2(2X-5)=3(3-X)
12-2X+10=9-3X
3X-2X=9-22
X=-13