3x+2=x-18
subtract 2 from both sides
3x=x-20
subtract 1x from both sides
2x=-20
divide both sides by 2
x=-10
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then 4 plus 3 equals 28 and 3 plus 3 equals 18 and 7 plus 5 equals 84 .... its easy you just have to multiply the answer with the first number.. for example : 2 plus 3 equals 5 but when you multiply the answer with the first number (2) it becomes equals 10, and so on the others..
(2, 3)
3
18
It is an equation and the value of x is 2