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Simplifying (8x + -3) + -1(x + 4) = 42 Reorder the terms: (-3 + 8x) + -1(x + 4) = 42 Remove parenthesis around (-3 + 8x) -3 + 8x + -1(x + 4) = 42 Reorder the terms: -3 + 8x + -1(4 + x) = 42 -3 + 8x + (4 * -1 + x * -1) = 42 -3 + 8x + (-4 + -1x) = 42 Reorder the terms: -3 + -4 + 8x + -1x = 42 Combine like terms: -3 + -4 = -7 -7 + 8x + -1x = 42 Combine like terms: 8x + -1x = 7x -7 + 7x = 42 Solving -7 + 7x = 42 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + 7x = 42 + 7 Combine like terms: -7 + 7 = 0 0 + 7x = 42 + 7 7x = 42 + 7 Combine like terms: 42 + 7 = 49 7x = 49 Divide each side by '7'. x = 7 Simplifying x = 7
| X^2+22x+121=121 | | 6x^2-14x+3=0 | | f(x)=0.75x+3 | | 6(-4x+3)=18+7x | | -3x=-d/7 | | 0.5t+5=4 | | 1+3.5x=0.9x+14 | | 2-4p+8=10 | | 11=5+c | | (37/5)+a-(3/2)a=(19/6)a+3/5 | | 6.75/-4.2= | | 5+8n=10n-17 | | 16x+8=2x+8+140 | | 4p+6=10 | | 1.7x-8=2u | | 4x+3=-4x-29 | | 30+6m=3-7(5+8m) | | |p+4|=|p-2| | | 14+11p=12p | | -(12/7)z=48 | | 1m+15=29.5 | | X=7-3.2 | | 5x^2=3x-8 | | r-8=7 | | 6(w+3)+5=-7(w+6) | | (4y-8)=12 | | 37/5+a-3/2a=19/6a+3/5 | | X=7+3.2 | | .5t+.4t=1 | | 9(x+3)=3(2x-1) | | 2m+10-7m=20 | | 2x^2+5t-3=0 |