-2[5(2j - 6) - 7j] = 5[3(j - 2)]?

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helpp.. answer and problem work.

2007-10-06 15:25:26 · 2 answers · asked by lil bit 1 in Science & Mathematics ➔ Mathematics

-2(10j - 30 - 7j) = 5(3j - 6)
-20j + 60 + 14j = 15j - 30
-21j = -90
j = 90/21
j = 30/7

2007-10-06 15:32:29 · answer #1 · answered by Steve B 6 · 0⤊ 0⤋

-2(10j - 30 - 7j) = 15(j - 2)
-20j + 60 + 14j = 15j - 30
-21j = -90
j= 90/21 =30/7 = 4.28

2007-10-06 22:32:36 · answer #2 · answered by Grg 2 · 0⤊ 0⤋