Question

Yuri solved the equation below incorrectly. Explain the step where he went wrong.

fifteen times b plus one equals thirty-one

Step 1: fifteen times b plus one minus one equals thirty-one minus one
Step 2: fifteen times b equals thirty
Step 3: fifteen times b times fifteen equals thirty times fifteen
Step 4: b equals four hundred fifty

Answer 1

i think the first step

Answer 2

\[15b+1=31\]
\[15b+1-1=31-1\]
\[15b=30\]
\[\frac{15b}{15}=\frac{30}{15}\]
\[b=2\]

Answer 3

thanks

Answer 4

yw