10 add 2 / 10+2
10+a are algebraic terms
It is -10.
Mean = average; so (77+10)/2 = 43.5 = mean of 77 plus 10.
Combining like terms, 16x + 20 = 180 or 16x = 160 so that x = 10
If you mean: 2x-90x+10 then it can be simplified to 10-88x by collecting like terms together.
(Sum of terms)/(number of terms) (10+10+10+2)/4=8
8/10 + 8/10 + 5/10 = 21/10
Factor as : (x+9)(x+10) using the first terms ( x terms) multiply to x2; the last terms multiply to 90; the sum of 9x + 10 x = 19x
1980
1/10 + 4/10 = 5/10 = 1/2
Without an equality sign and not knowing the plus or minus values of some of the given terms it has no solution. But if you mean: x+2+x+8 then it can be simplified to 2x+10
kothari commission(1964-66)