Pre-AlgebraMedium SharePre-Algebra · Medium problemCombine like terms: 4a+9−6a−24a + 9 - 6a - 24a+9−6a−2.A−2a−7-2a - 7−2a−7B−4a+7-4a + 7−4a+7C−2a+8-2a + 8−2a+8D−2a+7-2a + 7−2a+7Check Show answer Walk through it step by step Practice more like this