-7x+y=23
6x+7y=-4
y=7x+23
6x+7(7x+23)=-4
6x+49x+161=-4
55x+161-161=-4-161
55x/55=-165/55
x=-3
-7(-3)+y=23
21+y-21=23-21
y=2
Answer: 13
Step-by-step explanation:
first divide and then it comes out 13 then check your math so then it puts 120 its correct
Answer=0.87g/mL
Density=mass/volume
Density=43.5g/50mL
Density=0.87g/mL