solve the following linear equations:
a)x/2+x/3+x/4=13
b)(x+2)(x+3)+(x-3)(x-2)-2x(x+1)
c)(2x-1)/3-(6x-2)/5=1/3
d)2/3(x-5)-1/4(x-5)=9/2
e)6.5x+(19.5x-32.5)/2=6.5x+13+(13x-26)/2
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Answer:
a). x/2 + x/3 + x/4 = 13
LCM of 2,3,4 = 12
6x/12 + 4x/12 + 3x/12 = 13
6x+4x+3x = 13×12
13x = 13×12
x = 13×12÷13
x = 12 Answer
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