Simplify these expressions and find their values if x = 3, a =1, b = -2.
a) 4x - 5-3x + 9
b) 2- 8x + 4x + 4
c) 2a - 2b -- 4 - 5+ a
d) 10 - 3 - 4 - 5b
e) 5a - 1 - a + 9
need answers quickly
Answers
Answered by
2
Answer:
-11
Step-by-step explanation:
4x-5-3x+9
4×3-5-3×3+9
=12-5-(9+9)
=7-18
=-11
Answered by
2
Answer:
A) substituting the value of x
We get 4*3 - 5 - 3*3 + 9
=>12 - 5 - 9 + 9
=> 7
B) substituting the value of x
We get 2 - 8*3 + 12 + 4
=> - 6
C) substituting the Value of a and b
We get 2*1 - 2* - 2 - 9.+ a
=> 2 + 4 - 9 +a
=> - 2
D) 13
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