Fred solved the equation 8(3x – 7) = -6(x + 7) + 4 as shown. What error did Fred make between Step 1 and Step 2? Explain your reasoning.

He added 4 to a negative 42 and said it was 46 but its supposed to simplify to -38. X=3/5

hello from mrbilldoesmath!

answer:   x^2 + y^2 = 1024

discussion:

the equation of a circle with center (h,k) and radius "r" is

(x-h)^2 + (y-k)^2 = r^2.

in our case

(x-0)^2 + (y-0) ^2 = 32^2 = 1024

you,

mrb