Answer: Therefore, the value of k is -20
Step-by-step explanation:A=-26-3= -29
B=-3x+2
C = -2x + 7
A+B+C= -29 -3x +2 -2x +7
A+B+C= -29 +2+7 -3x -2Xx
A+B+C= -20-5x
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