Question

ok.... -2(7r+3)+6(7r+5)

Answer 1

simplify?

Answer 2

yes simplify the expression by combining like terms

Answer 3

first distribute -2 over the first bracket and then +6 over the second bracket
then combine like terms

Answer 4

ah.. ok

Answer 5

i'll start you off
-2(7r + 3) = -14r - 6

Answer 6

ah i see

Answer 7

so the second part id 42r-30?

Answer 8

is

Answer 9

42r + 30

Answer 10

so now you need to simplify -14r - 6 + 42r + 30

Answer 11

ok

Answer 12

for the first part, you divide by -42?

Answer 13

err 14r sorry

Answer 14

no there is only addition and subtraction involved here
a simple example is

-x - 2 + 2x + 4
first bring like terms together:-
-x + 2x - 2 + 4
= x + 2

Answer 15

so in your example the firat step is
-14r + 42r - 6 + 30

now you work out the 2 terms with r in them and then the 2 numbers