Answer:
u=-0.86
Step-by-step explanation:
Step 1: distribute values: 7u-7=3u+1+18u+4
Step 2: combine like terms: 7u-7=21u+5
Step 3: move the -7 over by adding 7 to both sides: 7u=21u+12
Step 4: move the 21u over by subtracting 21u from both sides: -14u=12
Step 5: divide by -14 and you get u=-0.86
Hope that helps
