In this expression, we can solve it by applying the distributive property
3(2y-7)
6y-21
So, factor 3 multiplies each term inside the parentheses.
2)-(x+4)
The minus outside the bracket works like a -1 multiplying it
-(x+4)
-x-4
3) For this one, remember the rule for multiplying fractions and then simplifying:
4) 6( x+1) -5(x+2)
6x+6 -5x-10
6x-5x+6-10
x-4