First, simplify the left-hand side (LHS) of the equation:
x−2−47=4(x−2)−7 So the equation becomes:
4(x−2)−7=72−x Cross-multiply:
−7(7)=4(x−2)(2−x) −49=4(x−2)(2−x) −49=−4(x−2)(x−2) −49=−4(x−2)2 Divide both sides by −4: 449=(x−2)2 Take the square root of both sides:
x−2=±449 x−2=±27 Solve for x in both cases: Case 1: x−2=27 x=2+27 x=24+27 x=211 Case 2: x−2=−27 x=2−27 x=24−27 x=−23