Step 1 distribute the 6 and -5
18x+30-2x-5x+15=210
Step 2: combine like terms
18x-2x-5x+30+15=210
11x+45=210
Step 3: subtract 45 from both sides
11x+45-45=210-45
11x=165
Step 4: Divide by 11 on both sides
11x/11=165/11
X=15
Step 5: Check
6(3(15)+5)-2(15)-5(15-3)=210
6(50)-30-5(12)=210
300-30-60=210
300-90=210
210=210
Final Answer:
X=15