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When m is a number, the solution of equation 3 (x + m) = 5x-2 is negative?
3（x+m）=5x-2
3x+3m=5x-2
2x=3m+2
Negative numbers mean X
How to solve the equation of 5x + 8 × 4x = 68
5x+8×4x=68
5x+32x=68
37x=68
x=68/37
How to write the equation of 5x + 35.5 = 90? And: 6x + 34 = 22 times 4: 4x-3.5 times 0.5 = 6.25: 16 + 4.5X = 25 2.4x/12 = 4.8
The first 5x + 35.5 = 90, 5x = 90-35.5, 5x = 54.5, x = 10.9, the second 6x + 34 = 22 times 4, 6x = 88-34, 6x = 54, x = 9, the third 4x-3.5 times 0.5, 4x = 6.25, 4x = 6.25 + 3.5 times 0.5, 4x = 8, x = 2, the fourth 16 + 4.5X = 25, 4.5X = 25-16, 4.5X = 9, x = 2, the fifth
Straight line and equation (5 13:3:50)
Given that 1 ≤ t ≤ 2, the slope of the line L passing through two points (U, 2t), (T-2, U) is 2
How to find the range of intercept of line L on Y-axis?
The slope of the straight line L passing through two points (U, 2t), (T-2, U) is 2, that is: (u-2t) / (t-2-u) = 2u-2t = 2t-4-2u3u = 4t-4u = (4t-4) / 3. Let the linear equation be y-2t = 2 (x-u), that is, the intercept of y = 2x-2u + 2T on the Y axis be m = - 2U + 2T = - 2 (4t-4) / 3 + 2T = - 8t / 3 + 8 / 3 + 2T = - 2T / 3 + 8 / 3, because: 1
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