The expression (10x \times 20x) can be simplified by multiplying the coefficients and the variables separately. The coefficients (10) and (20) multiply to give (200), and the variables (x) and (x) combine to give (x^2). Therefore, (10x \times 20x = 200x^2).
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10x + 10x = 20x
2y
The given terms can be simplified to: 20x+20
y + x = 9 10y + 20x = 100 This is a basic linear system of equalities. We can start by rewriting the first equation as: -10y - 10x = -90 by multiplying the equation by -10, from here we can eliminate y and solve for x (-10y - 10x = -90) + (10y + 20x = 100) = (10x = 10) This yields x = 1, and by plugging x into the first equation y = 8
5x x 4x = 20x^2 5x + x + 4x = 10x