Q. 1.5a−4.5b5.5b=3(a+b)=5(b−a)+2.5aIf (a,b) is the solution to the system of equations, then what is the value of b−a ?
Write System Equations: Write down the system of equations.We have the following system of equations:1.5a−4.5b=3(a+b)5.5b=5(b−a)+2.5aWe need to solve this system to find the values of a and b, and then calculate b−a.
Simplify First Equation: Simplify the first equation.1.5a−4.5b=3a+3bNow, move all terms involving variables to one side and constants to the other side.1.5a−3a=3b+4.5bCombine like terms.−1.5a=7.5bNow, divide both sides by −1.5 to solve for a.a=−5b
Substitute Value of a: Substitute the value of a from Step 2 into the second equation.5.5b=5(b−(−5b))+2.5(−5b)Simplify the equation by performing the operations.5.5b=5b+25b−12.5bCombine like terms.5.5b=17.5b−12.5b5.5b=5bNow, subtract 5b from both sides.0.5b=0Finally, divide both sides by 0.5 to solve for b.b=0
Calculate Value of a: Substitute the value of b back into the equation a=−5b from Step 2 to find the value of a.a=−5(0)a=0
Calculate b−a: Calculate b−a using the values of b and a found in Steps 3 and 4.b−a=0−0b−a=0