2^4x-2^3x-3
2^3=2x2x2
Which equals 8
Answer:
the bottom equation should be 18+30=3(6+10)
Step-by-step explanation:
6(3+10) = 18+60 which equals 78
78 does not equal 18
Solution:
Let the volume (in litres) of acids used be:
x1=amount of 25% acid
x2=amount of 40% acid
x3=3*x2=amount of 60% acid
Answer:
x2 + 7x + x2 + 7x + 9 = 3
