3x+1+2x-2 = 64
3x+2x = 64-1+2
5x = 65
x = 13
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8x8 = 64 so it is 64 (the y) 3x4 = 12 so it is 12 (the x) 64+12 is 76.
Simply by using the formula x= -b +/- Underroot of (b2 - 4.a.c) / 2.a 2+x-6=2x+4
3x + 11 + 5x = 75 Collect 'like terms on the LHS 8x + 11 = 75 Subtract '11' from both sides 8x = 64 Divide both sides by '8' 8x/8 = 64/8 x = 8
The answer is 64.
12x - 9y = 6, 12x + 20y = 64 29y = 58 y = 2 x = 2