12 out of 23 = 23 out of 18 / 9

12 out of 23 = 23 out of 18 / 9

12 out of 23 = 23 out of 18 / 9
23/12·X=23/18·9/4
X=23/8÷23/12
X=23/8·12/23
X=3/2
·On behalf of the multiply sign

Solve equation 1. X + 5 / 12 = 7 / 8 2. 4 / 9 + x = 23 / 27 3. X-8 / 11 = 3

x+5/12=7/8
x=7/8-5/12
x=21/24-10/24
x=11/24
4/9+x=23/27
x=23/27-4/9
x=23/27-12/27
x=11/27
x-8/11=3
x=3+8/11
x=33/11+8/11
x=41/11

3(x+5)-42=12

3(x+5)-42=12
3(x+5)=42+12
3(x+5)=54
x+5=54/3
x+5=18
x=18-5
x=13

Solution equation: x + 12.5% x = 90 what is x?
1、 Four fifths X -- 60% x = 4.8
2、 40% x-25% x = 12

To solve the equation:
x+12.5%x=90
1.125x=90
X = 90 divided by 1.125
X=80
Four fifths X -- 60% x = 4.8
8/5X=24/5
X=24/5*5/8
X=3
40%x—25%x=12
0.15X=12
X = 12 divided by 0.15
X=80