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21(x+5)-87=3(7x+6
We move all terms to the left:
21(x+5)-87-(3(7x+6)=0
We multiply parentheses
21x-(3(7x+6)-87+105=0
| 5+2w=-2w+6 | | −5(−3x+1)−3x−2=−5(−3x+1)−3x−2= −31−31 | | 5+2w=-2w+6 | | X+12=2x+9+3x-1 | | 12+12x+1=59 | | |-9c-7|=|-9c-3| | | X+12=2x+9+3x-1 | | 12+12x+1=59 | | 4-f=9 | | |-9c-7|=|-9c-3| | | -7n=-(4+6n) | | -7n=-(4+6n) | | (6x+56)=(5x+60) | | (6x+56)=(5x+60) | | 3/2=9.10k | | 4y+(y-4)=8y-4(y-10) | | 4y+(y-4)=8y-4(y-10) | | 4y+(y-4)=8y-4(y-10) | | 4y+(y-4)=8y-4(y-10) | | 4y+(y-4)=8y-4(y-10) | | 4y+(y-4)=8y-4(y-10) | | 4y+(y-4)=8y-4(y-10) | | 4y+(y-4)=8y-4(y-10) | | 4y+(y-4)=8y-4(y-10) | | 4y+(y-4)=8y-4(y-10) | | 4y+(y-4)=8y-4(y-10) | | 211x−2=−157 | | 4y+(y-4)=8y-4(y-10) | | (6x+56)=(5x+60) | | (6x+56)=(5x+60) | | (6x+56)=(5x+60) | | 211x−2=−157 |