ANSWER: y=9
First substitute x
6.4(3)+2.8y=44.4
19.2+2.8y=44.4
subtract 19.2 from both sides
2.8y=25.2
divide by 2.8 on both sides
y=9
Answer: x=2
Step-by-step explanation:
first subtract 3x from both sides
then your equation will be 8x-7=9 then you will add 7 to both sides getting 8x=16 then divide both sides by 8 and x=2
146.66 because you have to subtract then divide