can you help me Solve the equation 3x/5-0.5=1.9?
thanks
options:
16
0.16
4
2.3
回答 (10)
✔ 最佳答案
3x/5 - 0.5 = 1.9
3x/5 = 1.9 + 0.5
3x/5 = 2.4
3x = 5(2.4)
x = 12/3
x = 4
3x/5 - 0.5 = 1.9..first you add 0.5 to both sides...
3x/5 = 1.9 +0.5 = 2.4 then you cross multiple so multiply 2.4 x 5 and get 12
3x =12...then u divide 3 both sides so you get an answer of 4
x = 12/3 = 4
3 x = (2.4)(5)
3 x = 12
x = 4
You want to get rid of the 5 on the bottom, multiply all the other numbers by 5. 3x(5)/5-2.5=9.5 Cancel out the fives in the fraction.
3x-2.5=9.5
3x=12 divide both sides by three x=4
3x/5-0.5=1.9
- move the 0.5 to the other side so change -ve to +ve
3x/5=1.9+0.5
3x/5=2.4
- multiply whole equation by 5 to get rid of the /5
3x=12
x=4
3x/5-0.5=1.9
3x/5=1.9+0.5
3x/5=2.4
3x=2.4*5
3x=12
x=12/3
x=4
It's: x=4.
add .5 to both sides. multiply both sides by 5. divide both sides by 3.
參考: Me
3x/5 - 0.5 = 1.9
3x/5 = 1.9 +0.5 = 2.4
3x = 2.4 * 5 = 12
x = 12/3 = 4
Therefore, x = 4.
收錄日期: 2021-05-01 11:46:37
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