Solving equation 3 × (2x-2) = 12

Solving equation 3 × (2x-2) = 12

Divide left and right by 3 to get 2x-2 = 4, and then get x = 3

2 out of 3 divided by 1 out of 4 = 12 (solving equation)

Hello, I'm glad to help you out
2x/3÷1/4=12
(2x / 3) * 4 = 12 (dividing by a number is equal to multiplying by the reciprocal of the number)
2x/3=3（12/4=3）
2X = 9 (multiply each side by three)
X = 4.5 (coefficient to one)
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It is known that the decimal parts of 9 + √ 7 and 9 - √ 7 are respectively X and y, and find 3x + 2Y

x= √7-2
y=3- √7
3x+2y=3(√7-2)+2(3- √7)=√7