What is 1 (1 / 4) - (9 / 20) + (11 / 30) - (13 / 42) + (15 / 56) - (17 / 72) + (19 / 90) | Math enthusiast | Mathematical art

What is 1 (1 / 4) - (9 / 20) + (11 / 30) - (13 / 42) + (15 / 56) - (17 / 72) + (19 / 90)

1 (1 / 4) - (9 / 20) + (11 / 30) - (13 / 42) + (15 / 56) - (17 / 72) + (19 / 90) = 1 and 1 / 10

The sum of 19 tenths multiplied by 1.5 plus x equals 1:19

Column equation: (9 / 10) * 1.5 + x = 1:19
That is (9 / 10) * (3 / 2) + x = 1 / 19
Further 27 / 20 + x = 1 / 19
x=1/19-27/20
X = 20 / 380-513 / 380 (general)
x=-493/380

How to calculate that 6.3x minus 4.8x equals 4.5

6.3x-4.8x=1.5x=4.5 x=1.5

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