19x = 437
x = 437 ÷ 19
x = 23
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3059
(3x + 7)(x + 4)
Since the area of a rectangle is equal to the product of its two sides, then 4x - 3 is one factor of the product 12x^2 + 19x - 21 which represents the area. So the other factor is 3x + 7. Check: Or the given side could be 4x + 3 and the other side is 3x - 7, in order to obtain the area 12x^2 - 19x - 21.
The fractional notation for 0.3496 is 437/1250
Then x = 6 Therefore; 5x + 3 = 33 First you have to solve the value of X: 8X + 5X + 2X +4X = 114; OR 19x = 114. When you divide both sides of the equation by 19 to solve for X, you find that X = 6. Ergo, 5X + 3 = 30 + 3 = 33; hence, 5X + 3 = 33.