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What is the value of x and y in the simultaneous equation 4x plus 3y equals -5 and 3x plus 5y equals -12?
4x + 3y = -5 (Eq 1) 3x + 5y = -12 (Eq 2) Multiply the first equation by 3 and the second by 4: 12x + 9y = -15 (Eq 3) 12x + 20y = -48 (Eq 4) subtract Eq 3 from Eq 4 gives 11y = -33 so y = -3 and x = (15 + 12)/3 =1 Check: (4 x 1) + (3 x -3) = 4 - 9 = -5 and (3 x 1) + (5 x -3) = 3 - 15 = -12 QED Subtract
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What is x plus 9 equals 16?
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3x plus 4y equals 90 4x-3y equals -5?
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Solve the system of equations 3r -4s equals 0 and 2r plus 5s equals 23?
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Another straight line equation is needed such that both simultaneous equations will intersect at one point.
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What is -10 plus 7x plus 4x equals 78?
It is an equation and the value of x is 8
What is 27 plus 9 equals -52x plus 40x?
It is an equation and the value of x is -3
What 6x plus 3 equals 4x plus 11?
It is an equation and the value of x is 4
What is 4x plus 2x plus 2 equals 26?
It is an equation and the value of x is 4
What is x plus 4 equals 2x plus 3?
It is an equation and the value of x is 1
