Step-by-step explanation:
so we know that
(8.4x+2.9)+(−3.7x+5)= 4.7x+7.9
so we need an equivelant to 4.7x+7.9
A. −4.7x+7.9= -1/10x(47x-79)
B.=4.7x+7.9=1/10x(47x+79)
C.−12.1x+7.9=-1/10x(121x-79)
D.12.1x+7.9=1/10x(121x+79)
So the answer would be B!
Hope this Helps!