Afirst number plus twice a second number is 8. twice the first number plus the second totals 10. find the numbers.

3× __ -2=15 7 2× __+1=7 5 7× =22 15 5× __+10=2 8 × __+4=20 6 × =10 3 × __+2=8 6 × __+8=8 9 × __+7=20 6

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What is x3+3x2−16x−48 divided by x−1?