x+4= 12÷3
x+4=4
x=4-4
x=0
÷ (x+16.84) =1/5 (one fifth)
x+ 16.84=5×5
x+ 16.84=25
x=25- 16.84
x=8. 16
x-3/5x=8/ 15
Multiply it by 15 and you get:
15x-9x=8
6x=8
x=8/6
x=4/3
x÷7/5=8/7
x=8/7×7/5
x=8/5
3/4x+ 1/2=7/ 12
Multiply it by 12 and you get:
9x+6=7
9x=7-6
9x= 1
x= 1/9