Question

(x+ 45)×40+ 15×60=60x怎么解？

Answer 1

这是一个一元一次方程，展开解x.40+45*40+15*60=60.x60.x-40.x=45*40+15*6020*x=1800+90020*x=2700x=135

Answer 2

(x+ 45)×40+ 15×60=60x
解：40x+ 1800+ 900=60x
40x+2700=60x
60x-40x=3700
20x=2700
x=135

Answer 3

解：解方程，此方程的解为x = 135
(x + 45) × 40 + 15 × 60 = 60x
40 × x + 45 × 40 + 900 = 60x
40x + 1800 + 900 = 60x
40x + 2700 = 60x
60x - 40x = 2700

20x = 2700
x = 2700 ÷ 20

x = 2700 × 1/20
x = 2700/20
x = （135×20）/20
∴x = 135
答：此方程的解为x = 135

Answer 4

(x+45)×40+15×60=60x
40x+45×40+900=60x
45×40+900=60x-40x
20x=1800+900
20x=2700
x=2700÷20
x=135

Answer 5

(x+45)×40+15×60=60x
4(x+45)+15×6=6x
4x+180+90=6x
2x=270
x=135