Answer:
x = 3.5
Explanation:
(10x + 15) = 30
10x + 15 = 30 *
10x + 15 = 10 * 5
10x + 15 = 50 {Subtract 15 form both sides}
10x = 50 -15
10x = 35 {Divide both sides bt 10}
10x/10 = 35/10
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