2/5+7/9 is the same as 18/45+35/45 = 53/45
1+2+3+4+5+6+7+8+9= 45 :)
4 + (-2) + 5 = 7 BECAUSE adding a negative number is the same as subtracting the number, so 4 + (-2) = 2 and 2 + 5 = 7
45
52
7 plus 2 is 9. 9 plus 8 is 17. 17 plus 3 is 20.
n= -2
x=-2
2/5+7/9 is the same as 18/45+35/45 = 53/45
Solve for x. 3x + 3 = x + 7 2x + 3 = 7 2x = 4 x = 2 Check it. 6 + 3 = 2 + 7 It checks.
c= -2 2/7 OR -2.285714
35/45 + 6/45 = 41/45
It is 38 plus 7 equals 45
in the question 7-5u=-43, the answer to u is -45, because 7-5=2, 2x-45=-43. so u=-43.
7d + 2 < 51 7d < 49 d < 7
1/2 + 1/7 = 7/14 + 2/14 = 9/14
You can't solve it - you only have one equation and two unknowns. You need 2 equations to solve this.