Math, asked by cookie1240, 8 months ago

Please solve it step by step with explanation in a page and so i will mark you as brainliest and you will be awarded 20 points if u r able to help me..
6..
Simplify: 2a + [- a + (b-a)]
7..
Find the value of x, if (-5) x 3 = -5 + x.
8..
Find the value of a square - 3a if a = 2​

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Answers

Answered by Anonymous
2

Answer:

6. 2a + [-a + (b-a)]

= 2a -a + b - a

= 2a -2a +b

= b

(-5)×3 = -5 + x

-15 = -5 + x

-15+5 = x

-10 = x

a=2

-3a = -3×2

-3a = -6

(-3a)²=6² = 36

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