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Simplifying 4(x + 5) + -2(x + -4) = 42 Reorder the terms: 4(5 + x) + -2(x + -4) = 42 (5 * 4 + x * 4) + -2(x + -4) = 42 (20 + 4x) + -2(x + -4) = 42 Reorder the terms: 20 + 4x + -2(-4 + x) = 42 20 + 4x + (-4 * -2 + x * -2) = 42 20 + 4x + (8 + -2x) = 42 Reorder the terms: 20 + 8 + 4x + -2x = 42 Combine like terms: 20 + 8 = 28 28 + 4x + -2x = 42 Combine like terms: 4x + -2x = 2x 28 + 2x = 42 Solving 28 + 2x = 42 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-28' to each side of the equation. 28 + -28 + 2x = 42 + -28 Combine like terms: 28 + -28 = 0 0 + 2x = 42 + -28 2x = 42 + -28 Combine like terms: 42 + -28 = 14 2x = 14 Divide each side by '2'. x = 7 Simplifying x = 7
| 4x+x^3+50=360 | | 12x/18=10 | | 3v+24=7v | | logx*16=4 | | 10m+5n-2m+7n= | | 2a-100=a-26 | | 13=-5p-3+6p | | ((2x^1/2)^3)/(4x^2) | | -6y+10=-2(4y+1) | | V=(3/4)(1/2)(1/2) | | |4x+8|=8 | | 5z-69=3z-21 | | 2(p-2)=p-1 | | 6ln(x+2)=4 | | |2x+5|=7 | | 5x^2-28x-49= | | 5z-69=2z-21 | | 5x+10=28-2x | | 5(2x-10)=6(x-1) | | 7h+27h+4j+5j= | | V=3/41/21/2 | | 19+[3+(-7)]= | | x/9=x/10-7 | | |3x-6|=9 | | 20w+33=w+71 | | |2x-7|=11 | | (2x-3)(x-4)+(x+4)(2x-3)=0 | | |x-7|+2=11 | | 25p+18p-8q+4q= | | 6x+16-5x+11=-1 | | Ln(5)+ln(2x)=5 | | r/7=2 |