Question

how can i find the Euler,Runge-kutta (RK4) and the trapezoidal method of
this ff. numbers

1.x? = 2x + 3y , x(0) = -2.7
y? = 2x + y , y(0) = 2.8
[ 0 , 1 ] h = 0.05

2. x? = x - xy , x(0) = 4
y? = -y + xy , y(0) = 1
[ 0 , 8 ] h = 0.1

thanks :)