4x2 - 30 = 34
⇒ 4x2 = 64
⇒ x2 = 16
⇒ x = 4 or -4
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If the missing signs are pluses, x = 16.
4x2 - 30 = 34 Add 30 to both sides 4x2 = 64 Divide both sides by 4 x2 = 16 Take the square root of both sides: x = 4 or -4
-18
4x-6=34 +6=+6 4x=40 /4=/4 x=10
x - 18 = 34 just add 18 to both sides... X - 18 + 18 = 34 + 18 x + 0 = 52 x = 52