Step-by-step explanation:
= 5 • ( 4• x )
= 5 ( 4x )
= 20x

-1 / 7 = x
You need to combine the 2x and 5x then devise the 7x from -1
-3.2b + 9
by adding like terms together.
X=<span>y−<span>15
</span></span>x=<span><span>−y</span>+<span>8
</span></span>This is the correct answer