Question

Which of the following satisfies the equation 4(x + 10) = 5 - x?

(a) x = 7

(b) x = -7

(c) x = 5

(d) x = -10​

Answer 1

Answer:

(b) = -7

Step-by-step explanation:

4(x+10) = 5-x

4x + 40 = 5-x

4x + x = 5 -40

5x = -35

x = -7

Answer 2

Answer:

x=-7

Step-by-step explanation:

4(x+10)=5-x

Opening the bracket on l.h.s

4x+40=5-x

4x+x=-40+5

5x=-35

x=-7

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