L2MAEL
Simultaneous Equations:
Although you would’ve learnt this in L1 (hopefully), this is a quick breakdown:
First Equation:
2x−y=7
Second Equation:
3x+y=13
Solving:
turning second equation into y= form:
y=−3x+13
substituting into first equation:
2x−−3x+13=7
Solve for x, then, substitute that x into the equation witih y.