How many solutions does the following equation have? -9(z+8)=-9z-72−9(z+8)=−9z−72

Answer 1

hello Jonathan:

This problem has only ONE SOLUTION ONLY !! THE ONLY VARIABLE , YOU HAVE

IS THE LETTER Z , ABD NO OTHER ! SO COMBINE THE LETTERS WITH THE SAME LETTEES,ABD NUMBERS WITH NUMBERS THEN C OMBINE. PLS DO NOT MAKE IT HARD ON YOURSELF.

SO WE HAVE:

-9(Z+8) = -9Z-72 -9(Z++8) = -9Z-72

= -9Z -72 = -9Z-72 -9Z-72 =-9Z-72 NOW PUT THE -9Z TOGETHER AND THE -72 TOGETHER:

-9Z -72

-9Z -72

-9Z -72

-9Z -72

_____ ____

-36Z -288

SO WE HAVE: -36Z -288 =0

+288 +288

_________________

-36Z =288

______ _____

-36 -36

Z = -8

CHECK;

-9(-8 +8) = -9 (-8) -72 -9(-8+8) =-9(-8) -72

-9(0) = +72 -72 -9(0) = +72 -72

0 = 0 0 = 0 -----> CHECKS!

HOPE THIS HELPS1

-9Z -72