Answer:
Step-by-step explanation:
9x(x) -4(-2)= x+20
9x+8= x+20
9x=x+12
8x=12
8/12
x= 0.7
Answer:
x=3
hope it helps
Step-by-step explanation:
reorder the forms
9x-4(x-2)=x+20
↓
9x-4(-2+x)=x+20
↓
9x+(-2*-4+x*-4)=x+20
↓
9x+(8+-4x)=x+20
reorder the terms
8+9x+-4x=x+20
combine like terms: 9x+-4x=5x
8+5x=x+20
reorder the terms
8+5x=20+x
solve for x
4x=12
↓
x=3
