Question

Kate solved the inequality problem below incorrectly. Explain her error and redo the problem showing the correct answer.

Original problem: -3x+4<16
Kate’s math work: -3x+4-4<16-4
-3x÷-3<12÷-3
x<-4

Answer 1

Original problem: -3x+4<16

-3x÷-3<16÷-3

x<-4

Kate’s math work: -3x+4-4<16-4

-3x÷-3<12÷-3

x<-4

she changed 16 to 12