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To solve the equation "4x = 78" for x, you would divide both sides by 4. This gives you x = 78 ÷ 4, which simplifies to x = 19.5. Therefore, the value of x that satisfies the equation "4 times x equals 78" is 19.5.
4 x 4 = 16
(75+83+78+X)/4=80, solve for X X=4*80-75-83-78 So X=84
72+74+76+78 =300. Explanation: let x be the first number. Then the others are x+2,x+4 and x +6. x +( x + 2) +( x + 4) + (x + 6 ) = 300 4x + 12 = 300. 4x = 288 x = 288/4 = 72. So, the numbers are 72,74,76 and 78.
455 x 78 = 35,490.