2+4z-18 slove step by step

another question is 2+k-8 slove step by step these questions is not together

2+4z-18

change it so it's an equation

2+4z-18=0

then get 4z alone on one side by subtracting 4z from both sides

2-18=-4z

-16 = - 4z

divide both sides by - 4

a negative divided by a negative becomes positive

4 = z

plug it in

2+4 (4) - 18

4x4 is 16

2+16-18=0

0=0

the same can be done for the second one 2+k-8

make it 2+k-8=0

move the k to get it alone so subtract k from both sides

2-8=-1k

-6 = - 1K

you can divide by K to make K=6

plug in 2+6-8=0

0=0