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Simplifying 3(-5x + 7) = 81 Reorder the terms: 3(7 + -5x) = 81 (7 * 3 + -5x * 3) = 81 (21 + -15x) = 81 Solving 21 + -15x = 81 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + -15x = 81 + -21 Combine like terms: 21 + -21 = 0 0 + -15x = 81 + -21 -15x = 81 + -21 Combine like terms: 81 + -21 = 60 -15x = 60 Divide each side by '-15'. x = -4 Simplifying x = -4
| 16=4y^2 | | a-17=11 | | 2x+2y=3x+3y | | 4/5-0.3 | | P^4-7p^2-144=0 | | 0=-16t^2+25t+260 | | 9(w-5)=-2w-23 | | 4m+3m+3n=7m+3n | | 0=4x^2+32x+44 | | z^2+.84z-.4=0 | | 4+5(3-2k)=89 | | 2(5/6)2 | | ln(11)+2ln(x)-3ln(y)= | | 2(5/6)squared | | 4cos(x)cos(2x)-cos(3x)=0 | | 5r^2+-22r-48=0 | | 6(1-3p)-2=94 | | 3(-3a-1)= | | -8(6x+2)=-112 | | 2(5t-3)=2(3t+6) | | -72-9x=54 | | 5(3k-2)=110 | | 63=0.5*w*(2w-4) | | 2*ln(2x)=18 | | x^2-.75x-.5=0 | | y-15=b | | 18/x^3=0 | | 18/x^3 | | 4w+4x-15y+2w+9x+8y= | | f(x)x^2-9=9 | | -16t*t+10t+3= | | 5(3j-2)=21 |