Add digit by digit, from the right, just like any number, except that if it adds to 2, then put a zero and carry one (instead of carrying when it adds to 10 or more).
Example: < means carry, decimal equivalent for checking
1011+1111
1 0 1 1 (8+2+1=11)
+ 1 1 1 1 (8+4+2+1=15)
---<---<----<----<----
1 1 0 1 0 (16+8+2=26)
Proceeding similarly,
a. 10101111+11011011 = 110001010 (394)
b. 10010111+11111111 = 110010110 (406)
c. 01110101+10101100 = 10010001 (289)
18 * 3.5 = 63
He wants to fry 63 potatoes
63/6 = 10.5
He will need 10.5 liters of oil to from potatoes for 3.5 hours.
If 3+11÷15=3.73333 then 4+7÷5 will equal 5.4,I think
First, add 1 on both sides of the equation to begin to isolate x
x/5 = 8
Now, to isolate x, multiply both sides of the equation by 5/1
·
=
= x
x= 7 · 5/1 = 7 · 5 = 35
x = 35
