babygirl451 babygirl451 04-01-2017 Mathematics contestada simplify 7b-b-x+5-2x-7bsimplify -6m+3t+4-4m-2tsimplify 2r+3s-5rsimplify 4-p-2x+3p-7xsimplify 3k-2x+6k+5simplify 3+2a-7x+3.5+5xsimplify 4a+3-2y-5a-7+4ysimplify c-3+2x-6c+4x