20 and 7 Because 4x5 = 20
5x+12z Because you take, 3z+9z and that is equivalent to 12z. and then you put the 5x back into the equation so it is 5x+12z
Answer:
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Step-by-step explanation:
21.07 beacuse when you add them all up you get that..
Hello,
2k²-3k-9=0
==>k=3 or k=-3/2
Answer C two rational solutions.