Answer:
4450 I think
Step-by-step explanation:
4878-428=4450
5x+2y=20
Substitute 0.3 for x
5(0.3)+2y=20
Multiply 5 by 0.3
1.5+2y=20
Subtract 1.5 from both sides
2y=18.5
Divide 2 on both sides
Final Answer: y= 9.25
um
10x-40
5 times 2x minus 40 works because of the distributive property
addition since inverse means opposite
