Depends on the value of x
if x is 1 then 10x + 20 = 30
if x is 2 then 10x + 20 = 40
if x is 3 then 10x + 20 = 50
if x is 4 then 10x + 20 = 60
if x is 5 then 10x + 20 = 70
if x is 10 then 10x + 20 = 120
And so on
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x + 20 + 10x = 20 + 9x 11x + 20 = 20 + 9x Subtract 20 from both sides: 11x = 9x Subtract 9x from both sides: 2x = 0 Divide both sides by 2: x = 0
20 divided by 4 multiplied by 2 plus 6 equals 16. 20/4 = 5, 5x2 = 10, 10+6 = 16.
If X = 4 then 5X is equal to 5 x 4 which is 20. So 20 + 2 = 22.
Equations: 2x-3y = 4 and 5x+2y = 1 Multiply all terms in 1st equation by 5 and all terms in 2nd equation by 2:- So: 10x-15y = 20 and 10x+4y = 2 Subtract the 2nd equation from the 1st equation: -19y = 18 => y = -18/19 By substitution the solutions are: x = 11/19 and y = -18/19
2x+4 = -16 2x = -16-4 2x = -20 x = -10