1] 8-2(2a-5)=2(a+3)-3a
Answers
Answer:
a=+4
Step-by-step explanation:
8-2(2a-5)=2(a+3)-3a
☆ We move all terms to the left:
8-2(2a-5)-(2(a+3)-3a)=0
☆ We multiply parentheses:
-4a-(2(a+3)-3a)+10+8=0
☆ We calculate terms in parentheses: -(2(a+3)-3a), so:
2(a+3)-3a
☆We add all the numbers together, and all the variables :
-3a+2(a+3)
☆We multiply parentheses:
-3a+2a+6
☆ We add all the numbers together, and all the variables:
-1a+6
☆ Back to the equation:
-(-1a+6)
☆We add all the numbers together, and all the variables
-4a-(-1a+6)+18=0
☆ We get rid of parentheses
-4a+1a-6+18=0
☆ We add all the numbers together, and all the variables:
-3a+12=0
☆ We move all terms containing a to the left, all other terms to the right:
-3a=-12
a=-12/-3
a=+4
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