Question

6. Solve the following equations and check your answers:
(a) 7x - 3x + 8 = x + 2
(b) x + (x + 6) = (x + 8) +21
2x + 4
(c) 2(x + 10) = 3(x - 20)
(d) x-5/7 - 8 = 2x+4/5
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Answer 1

Answer:

(a) 7x-3x+8=x+2

4x+8=x+2

4x-x=2-8

3x=-6

x=-2 verified equal

(b) 2x+6=29+x

2x-x=29-6

x=23 verified equal

(c) 2x+20=3x-60

3x-2x=60+20

x=80 verified equal

(d) 2x-x=4/5+5/7

x=63/35 verified equal