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Simplifying 7(4x + -12) = 42 Reorder the terms: 7(-12 + 4x) = 42 (-12 * 7 + 4x * 7) = 42 (-84 + 28x) = 42 Solving -84 + 28x = 42 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '84' to each side of the equation. -84 + 84 + 28x = 42 + 84 Combine like terms: -84 + 84 = 0 0 + 28x = 42 + 84 28x = 42 + 84 Combine like terms: 42 + 84 = 126 28x = 126 Divide each side by '28'. x = 4.5 Simplifying x = 4.5
| Y=x^2+5x-20 | | (3/s)=7 | | 11-(3x+8)= | | 7+x+8x= | | 20xz/10x^2 | | 7x-18=-5x+6 | | 1.6b-33+b=2b-17-0.4b | | 3(7n+2)=34 | | 3b=-10 | | -1.6b-33=2b-17-0.4b | | 64-27x^6=0 | | 2sin^2x-5sinx-7=0 | | 2sin^2x+5sinx-7=0 | | 4x+3(x*x)-x+2=38 | | 5sec^2x=6secx | | r^2-3r+29=0 | | .28y=270 | | r^6+5r-14=0 | | 3x+8x-9x=5+7 | | y=4x^2-28-32 | | 9y-4=-16+3y | | 0.6=(1.6x10^-19)^(-x/2.1) | | 9s-24=39+2s | | 3/y-2=8 | | 0.6=(1.6x10^-19)^(-t/2.1) | | 4sin^2x+8sinx+4=0 | | 2/3n-5/9=5/2 | | 5x+y=-18 | | y=10x+-20 | | 0.1w+0.2x+0.5y+0.2z=18 | | 124=-16t^2+34+120 | | (0.1*x)+(0.2*y)+(0.5*z)+(0.2*w)=18 |