Solve for a, b, c and d.   81690010219a+18826921b+4339c+d=342 190010204749a+33051001b+5749c+d=253 97590140864a+21196816b+4604c+d=305 109695871403a+22915369b+4787c+d=234

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A: Use scalar multiplication of matrix and addition of matrix to simplify it.

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A:

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A: Step 1:given 4.7i+6.13i+5.6 Step 2: Add 4.7i+6.13i You get 4.7i+6.13i=10.83i   Step 3:Now 10.83i +…

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A: I'm providing hand written solution for better understanding.

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A: sec-11.5

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A: According to question,Given expression,1-11+a20a=-1.062

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A: Given query is to find lines are parallel or not.

Q: Solve for x in the equation 9 = |2x - 3| O x=0, 11 O x = 1,9 O x = 2,9 O x = -3, 6 O x = -3,3

A: