Can you make a full contribution to a SEP IRA and Traditional IRA in the same tax year? Example: Contribute 25% of income to SEP-IRA and $6000 to Traditional IRA

My income is made up of both self-employment and W-2 work. I'm trying to lower my AGI a little bit. So, I'm thinking about contributing some money to a SEP-IRA along with my yearly traditional IRA contribution.