Answer:
a x=10
b x=7
Explanation:
(a) 2(x+3) = x - 4
2x+6 = x - 4
2x+6-6= x-4-6
2x=x-10
2x-x=x-10-x
x=10
(b) 4(5x-2) = 2(9x+3)
20x-8 =18x+6
20x-8+8=18x+6+8
20x=18x+14
20x-18x =18x+14-18x 2x=14
/2 /2
x = 7.
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