Write a story problem for a Doubles Plus One Set (x3) fact. ©The Math Learni
S
Tages in Mathematics Grade 4 Home Connections
-*** Learni

32

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -

3

step-by-step explanation:

because where the point where the 2 lines intersect is (3,-1) the x value is 3