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Simplifying 90 = (2x + -1) + (5x + -42) Reorder the terms: 90 = (-1 + 2x) + (5x + -42) Remove parenthesis around (-1 + 2x) 90 = -1 + 2x + (5x + -42) Reorder the terms: 90 = -1 + 2x + (-42 + 5x) Remove parenthesis around (-42 + 5x) 90 = -1 + 2x + -42 + 5x Reorder the terms: 90 = -1 + -42 + 2x + 5x Combine like terms: -1 + -42 = -43 90 = -43 + 2x + 5x Combine like terms: 2x + 5x = 7x 90 = -43 + 7x Solving 90 = -43 + 7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7x' to each side of the equation. 90 + -7x = -43 + 7x + -7x Combine like terms: 7x + -7x = 0 90 + -7x = -43 + 0 90 + -7x = -43 Add '-90' to each side of the equation. 90 + -90 + -7x = -43 + -90 Combine like terms: 90 + -90 = 0 0 + -7x = -43 + -90 -7x = -43 + -90 Combine like terms: -43 + -90 = -133 -7x = -133 Divide each side by '-7'. x = 19 Simplifying x = 19
| -4y+12x=48 | | 2-7[7-(3y-8)]= | | 5k-7=k+5 | | -18-3y=9x | | 3y-7=17-13 | | -6p-7p=2p+5-7p-1 | | 5+-3x=103 | | 3y+3-4y-8=y^2+y-2y-2 | | 3x^2-22x=-7 | | 0.08x+0.09y=740 | | 08x+.09y=740 | | .08x+.09=740 | | 5(1)+y=3 | | -5x-19=10-4x | | 4y-6=-8 | | 5x-4=7x-16 | | 2(5x+4)-2=3(x+5) | | 11-(w+4)-2w+5=w+12 | | -3(2t-2)+4t=7t-4 | | 9/5=16k/5-1/5(k+1) | | 9+5x-9x= | | 8=(1.8)c+32 | | 3x+3(2.7+5x)=6.1+19x | | -50+6x=9x+22 | | 5p=5p | | 68=-3(1-2n) | | a-bc=-3b | | 68= | | .8x-6=0 | | -48-2x=80+6x | | Y=2.5x+.5 | | -5+y=7 |