Q. Find the solution of the system of equations.4x−y8x+7y=15=−33
Solve for y: Solve the first equation for y.We can express y in terms of x using the first equation 4x−y=15.y=4x−15
Substitute in second equation: Substitute the expression for y into the second equation.We will replace y in the second equation 8x+7y=−33 with the expression we found in Step 1.8x+7(4x−15)=−33
Distribute and combine terms: Distribute and combine like terms.Now we distribute 7 into the parentheses and combine like terms.8x+28x−105=−3336x−105=−33
Add 105 to isolate x: Add 105 to both sides of the equation to isolate the term with x.36x−105+105=−33+10536x=72
Divide to solve for x: Divide both sides by 36 to solve for x.x=3672x=2
Substitute x into y expression: Substitute x back into the expression for y. Now that we have the value for x, we can find y by substituting x into y=4x−15. y=4(2)−15y=8−15y0