Answer:
42=2[{45-3(14-21)}+4]
42=2[{45-3×-6}+4]
42=2[{45-18}+4]
42=2[{27}+4]
42=2[27+4]
42=2×31
42=62
c = (b+3a)/2
Step-by-step explanation:
<u>Solve for c:</u>
<u>Multiply both sides by abc:</u>