a) x/10=x+1/2 /*10
x=10x+5
-9x=5 /:(-9)
x=-5/9
b)4/7a+1=6/8a+9
32/56a-42/56a=9-1
-10/56a=8 /:(-10/56)
a=8*(-56/10)
a=-44,8
c)3+x^/2=2x(2x-1)/8 /*8
24+4x²=4x²-2x
2x=-24 /:2
x=-12
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a) x/10=x+1/2 /*10
x=10x+5
-9x=5 /:(-9)
x=-5/9
b)4/7a+1=6/8a+9
32/56a-42/56a=9-1
-10/56a=8 /:(-10/56)
a=8*(-56/10)
a=-44,8
c)3+x^/2=2x(2x-1)/8 /*8
24+4x²=4x²-2x
2x=-24 /:2
x=-12