Q. Find the solution of the system of equations.3x−3y15x+6y=0=42
Analyze Equations: Analyze the system of equations.We have the system:3x−3y=015x+6y=42We need to find the values of x and y that satisfy both equations simultaneously.
Simplify First Equation: Simplify the first equation.The first equation can be simplified by dividing both sides by 3 to isolate x in terms of y.(3x−3y)/3=0/3x−y=0x=y
Substitute and Solve: Substitute x with y in the second equation.Since x=y, we can replace x with y in the second equation to find the value of y.15y+6y=42
Combine and Find y: Combine like terms and solve for y.15y+6y=4221y=42y=2142y=2
Substitute Back for x: Substitute y back into x=y to find the value of x.Since x=y and we found y=2, then x=2.
Check Solution: Check the solution in both original equations.First equation: 3x−3y=03(2)−3(2)=06−6=00=0 (True)Second equation: 15x+6y=4215(2)+6(2)=4230+12=4242=42 (True)Both checks are correct, so the solution (x,y)=(2,2) satisfies both equations.