X - 4 = 9 add 4 to each side X = 13 check 13 - 4 = 9 9 = 9
-9-2x+x = -13 -2x+x = -13+9 -x = -4 x = 4
1) x+9=13 (subtract 9) x=4 2) x+9=13 (divide by 9) x/9+1=13/9 (use Pascals theorem of 1) (x+4)/2=4 x+4=8 x=4
13 x 9 = 117
22-9=13
X - 4 = 9 add 4 to each side X = 13 check 13 - 4 = 9 9 = 9
-9-2x+x = -13 -2x+x = -13+9 -x = -4 x = 4
Absolutely !
1) x+9=13 (subtract 9) x=4 2) x+9=13 (divide by 9) x/9+1=13/9 (use Pascals theorem of 1) (x+4)/2=4 x+4=8 x=4
If you mean x+4 = 13 then the value of x is 9
13 x 9 = 117
22-9=13
£1.17 = 9 x £0.13 13 - 9 = 4 4 x £0.13 = £0.52 £1.17 + £0.52 = £1.69 or 13 x (£1.17 / 9) = 13 x £0.13 = £1.69
% rate:= (13/9) x 100%= 1.44 x 100%= 144%
(9/13) / (10/13) =(9/13) x (13/10) =9/10
x=9; y=4; x=x+y; #x=13;y=4; y=x-y; #y=13-4=9; x=x-y; #x=13-9=4;
9/13 x 9/13 is 81/169.