2x + 4 = 16
2x = 16 - 4
2x = 12
x = 12/2
x = 6
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2x+4 = -16 2x = -16-4 2x = -20 x = -10
2x + 4 = 10 2x = 10 - 4 = 6 2x = 6 x = 6/2 = 3
2x + 4 = y ...............2x + 4 = y ....................2x + 4 = y .............2*(-6)+ 4 = y x - y = 2 .......<=> ...x - 2x - 4 = 2 .....<=> ...x = -6......... <=>.... x = -6 ..............<=> y = - 8 x = - 6
X=7
7x + 4 = 2x + 5Subtract 4 from each side of the equation:7x = 2x + 1Subtract 2x from each side:5x = 1Divide each side by 5:x = 1/5 = 0.2