40 + 60 = 60 + x
Addition has a property called the Commutative property which says that:
x + y = y + x.
So, over here:
x = 40
y = 60
Thus,
40 + 60 = 60 + 40
60 plus 40 equals 100. This can be calculated by subtracting 60 from 100 to find the difference, which is 40. Adding this difference to 60 gives the total sum of 100.
60 + 60 + 60 + 50 + 50 + 40 + 30 = 350
The result of the equation - 130 plus 80 plus 60 plus 40, is found as follows;130 + 80 + 60 + 40= ( 130 + 80 ) + 60 + 40= 210 + ( 60 + 40 )= 210 + 100= 310Answer = 310
2a + 2b = 160 But b = a + 40 so 2a + 2(a + 40) = 160 ie 2a + 2a + 80 = 160 or 4a = 80 ie a = 20 Then b = a + 40 gives b = 20 + 40 = 60 Solution: a = 20, b = 60
24 is 60% of 40
A number "m" plus 40 equals 60. Therefore, 60 minus 40 equals m. m therefore equals 20.
275
60 plus 40 equals 100. This can be calculated by subtracting 60 from 100 to find the difference, which is 40. Adding this difference to 60 gives the total sum of 100.
-3.32
60 + 40: lx + xl = c 5 - 40: v - xl = -xxxv
300 !
60 + 60 + 60 + 50 + 50 + 40 + 30 = 350
The result of the equation - 130 plus 80 plus 60 plus 40, is found as follows;130 + 80 + 60 + 40= ( 130 + 80 ) + 60 + 40= 210 + ( 60 + 40 )= 210 + 100= 310Answer = 310
2a + 2b = 160 But b = a + 40 so 2a + 2(a + 40) = 160 ie 2a + 2a + 80 = 160 or 4a = 80 ie a = 20 Then b = a + 40 gives b = 20 + 40 = 60 Solution: a = 20, b = 60
Add the two equations you get 5y = 60 so y = 12 and x = 2
The result of the equation - 130 plus 40 plus 60 plus 80, is found as follows;130 + 40 + 60 + 80= ( 130 + 40 ) + 60 + 80= 170 + ( 60 + 80 )= 170 + 140= 310Answer = 310
The answer is y=0 .