Answer:
4x = −4
Step-by-step explanation:
Question 2
2(2x − 5 − 4) = 160 − 17
4x-10-8 = 160-17
4x-18=143
4x = 161
x=40.25
Question 3
4(2z + 3) = 12
8z +12 = 12
8z = 0
z = 0
Question 4
5(2x − 6) + 20 = 10
10x-30+20=10
10x-10=10
10x =20
x=2
Question 5
5x + 10 = 5x − 8
5x+18=5x
18=0
Zero solutions