4. The steps for solving 7x+ 3 = 52 are shown. Explain how each step helps solve
the equation. Include the phrases, "Isolate the variable by _." "Simplify," and
"Isolate the variable term by ___" in your answers.
Original equation
7x +3 - 52
7x +3 -3 -52-3
7x = 49
X
-7
5. Andrea spent $40 at a shoe store. She bought a pair of shoes for $25 and 5
identical pairs of socks. How much was each pair of socks?
a. Write an equation to represent this situation. Use x to represent the price of
each pair of socks

at home andrea has 1 2/3 kilograms of rice

step-by-step explanation:

x = 17

step-by-step explanation:

1st step: isolate x.

24 - 3x = -27

-24         -24

-3x   =   -51

2nd step: divide.

-3x     =   -51

  3             3

  x       =     17

hope this

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb