Algebra
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So I've been working on solving this system by addition/subtraction and I just can't get the right answer. Her is the system of equations I was given to solve by add/sub: 3x – y = –12 x + 2y = –18
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Solve the following system by using either addition or substitution. If a unique solution does not exist, state whether the system is dependent or inconsistent. 10x+2y=7 y=5x+3
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Translate to a system of equations and solve using the addition method. The sum of two numbers is88. The difference is 22.Find the numbers? My answer: I started but i think that i am wrong. x + y = 88 y = x +88 y = 1x + 88 now
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Solve the system by addition or substitution. 3x – 4y = 8 6x – 2y = 10 Please get me on the correct track for 3x 4y =8 x=4, y=1 for 6x  2y =10 x= 2, y= 1 Solve one equation for x. 3x = 4y + 8 x = (4y + 8)/3 Insert that value
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Consider the following equilibrium: H2CO3 (aq) ↔ H2O (l) + CO2 (g) Which direction will the equilibrium shift (left or right) if we: Increase the pressure by decreasing the volume of the system: Increase the pressure by adding
asked by Anonymous on February 19, 2013 
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i need help solving the system by addition. 5x7y=5 x+3y=1 this is what i think but i am not sure 3y=x+1 y= (1/3)x+(1/3) 5x  7 (1/3x + 1/3) = 5 5x+2.3333331x2.3333331=5 7.3333331x2.3333331=5 7.3333331x=7.3333331 x=1 x+3y=1
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Solve the system by addition. 4x + 6y = 9 8x – 3y = –7
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Solve the system by addition. 2x4y=7 4x+2y1
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