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Solving equations 2x + y = - 2 - 2x + 2Y = - 10 by addition and subtraction
2x+y=-2 … ①
-2x+2y=-10… ②
① + 2, 3Y = - 12
∴y=-4
Substituting y = - 4 into 1, we can get x = 1
Therefore: the solution of the equations is x = 1, y = - 4
Given that x = 2 / 3 is the solution of the linear equation 3 (M-3 / 4x) + 3 / 2x + 5m, then the value of M is
Just replace x with 2 / 3 and calculate M
Solving the equation (1) 2x-4x-1 = 0 (2) 4x-6x = 3 = 0
(1) In this paper, we use the formula to find the roots of the formula: \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\it's not easy
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