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Simplifying Algebraic Expressions Simplify by using the distributive property and combining like terms. `(2x-8)+(-9x+7) = `
`(-4x-5)-(2x-8) = `
`3(-9x+7)-4x = `
`4(-9x+7)+(-x^2+6x-7) = `
`-7x-1`
`-6x+3`
`-31x+21`
`-x^2-30x+21`