Algebra: Linear equations
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1.) x - x = 5
2 3
2.) 0.5b + 3.4 = 0.2b + 12.4
3.) -3 - 4(t - 5) = 2(t + 3) +11
4.) 0.08x + 0.5(x + 100) = 73.2
5.) Raising rabbits. Before Roland sold two female rabbits,
half of his rabbits were female. After the sale, only onethird
of his rabbits were female. If x represents his original
number of rabbits, then
1 x - 2 = 1 (x - 2)
2 3
Solve this equation to find the number of rabbits that he had before the sale.
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Solving linear equations are examined.
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so
1.) x - x = 5
2 3
First we get the LCD( least common denominator) of 2 and 3 which is 2*3=6
Therefore we multiply first fraction by 3 and second by 4 and get:
3x - 2 x = 5
6 6
So x =5
6
Therefore x= 5*6=30
2.) 0.5b + 3.4 = 0.2b + 12.4
-0.2b -3.4 -0.2 b-3.4
0.3 b ...
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