a) x= 8/9+4/7
x=92/63
b)x= 7:4/9
x= 63/4
c) x = 8/11x3/7
x= 24/77
a: x=8/9+4/7=92/63
b: x=7:4/9=63/4
c: x=8/11x3/7=24/77
a) \(x-\dfrac{4}{7}=\dfrac{8}{9}\)
\(x=\dfrac{8}{9}+\dfrac{4}{7}\)
\(x=\dfrac{56}{63}+\dfrac{36}{63}\)
\(x=\dfrac{92}{63}\)
b) \(x\times\dfrac{4}{9}=7\)
\(x=7:\dfrac{4}{9}\)
\(x=7\times\dfrac{9}{4}\)
\(x=\dfrac{63}{4}\)
c) \(x:\dfrac{3}{7}=\dfrac{8}{11}\)
\(x=\dfrac{8}{11}\times\dfrac{3}{7}\)
\(x=\dfrac{24}{77}\)
a, x = 92/63
b, x = 63/4
c, x = 24/77
