Question

七x-4x2.4等于44？

Answer 1

7x-4×2.4=44
解：7x-9.6=44
7x=44+9.6
7x=53.6
x=7又23/35

Answer 2

解：解方程， 此方程的解为x = 268/35
七x-4x2.4等于44
7x - 4 × 2.4 = 44
7x - 4 × （2×10+4）/10 = 44
7x - 4 × 24/10 = 44
7x - 4 × 12/5 = 44
7x - 48/5 = 44
7x = 44 + 48/5
7x = 220/5 + 48/5
7x = 268/5
x = 268/5 ÷ 7
x = 268/5 × 1/7
∴x = 268/35
答：此方程的解为x = 268/35

Answer 3

你两个x，一模一样的
前面的是未知数吧？
后面的是乘号？那么
7X-4x2.4=44
7X=44+9.6
7X=53.6
X=7.65714285.......
X≈7.657或者是7.66

Answer 4

7x-9.6=44
7x-9.6+9.6=44+9.6
7x=53.6
7x÷7=43.6÷7
x=218/35

Answer 5

7X-9.6=44
7X=53.6
X=7又35/23