x/5 + x/10 = 9/19
A-15=20
*/5 + */10 =9/10
A+7=13
D-12=14
or
1 /4 × (1/3) πR2h × 3/4 πr3
4-1/2
(2x+3)^2
Solve the following system of equations using Gauss Jordan method
x_{1} + x_{2} + x_{1} + x_{4} = 2, 2x_{1} - x_{2} + 2x_{3} - ...
