Algebra 1MediumAlgebra & Manipulation ShareAlgebra & Manipulation · Medium problemSolve for xxx: 3(3x+1)+21=3(2x+4)3(3x + 1) + 21 = 3(2x + 4)3(3x+1)+21=3(2x+4).Check Show answer Walk through it step by step Practice more like this Review this concept